https://code-reference.com/ 2026-05-19T01:05:54+02:00 https://code-reference.com/ https://code-reference.com/ttps://code-reference.com/lib/tpl/dokuwiki/images/favicon.ico text/html 2024-02-16T01:05:25+02:00 https://code-reference.com/c/examples/hostscanner?rev=1708041925&do=diff #include <stdio.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <netdb.h> #include <arpa/inet.h> #define fir 16777216 #define sec 65536 #define the 256 int s; struct sockaddr_in addr; char rmt_host[100]; int skan(port) int port; { int r; s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); if (s < 0) { printf("ERROR: socket() failed\n"); exit(0); } addr.sin_family = PF_INET; addr.sin_port = htons(port); addr.sin_addr.s_addr = … text/html 2024-02-16T01:04:10+02:00 https://code-reference.com/arduino/data_types/unsignedint?rev=1708041850&do=diff Description On the Uno and other ATMEGA based boards, unsigned ints (unsigned integers) are the same as ints in that they store a 2 byte value. Instead of storing negative numbers however they only store positive values, yielding a useful range of 0 to 65,535 (2^16) - 1). text/html 2024-02-16T01:05:10+02:00 https://code-reference.com/c/datatypes/unsigned?rev=1708041910&do=diff unsigned unsigned char ch; unsigned long int l; unsigned char 0 to 255 unsigned int 0 to 65535 [or 0 to 4294967295 if '-mnoshort' is set] unsigned short int 0 to 65535 unsigned long int 0 to 4294967295 text/html 2024-02-16T01:04:11+02:00 https://code-reference.com/arduino/data_types/unsignedlong?rev=1708041851&do=diff Description Unsigned long variables are extended size variables for number storage, and store 32 bits (4 bytes). Unlike standard longs unsigned longs won't store negative numbers, making their range from 0 to 4,294,967,295 (2^32 - 1). Example unsigned long time; void setup() { Serial.begin(9600); } void loop() { Serial.print("Time: "); time = millis(); //prints time since program started Serial.println(time); // wait a second so as not to send massive amounts of data delay(10… text/html 2024-02-16T01:04:16+02:00 https://code-reference.com/arduino/constants/progmem?rev=1708041856&do=diff Store data in flash (program) memory instead of SRAM. There's a description of the various types of memory available on an Arduino board. The PROGMEM keyword is a variable modifier, it should be used only with the datatypes defined in pgmspace.h. It tells the compiler “put this information into flash memory”, instead of into SRAM, where it would normally go. text/html 2024-02-16T01:04:51+02:00 https://code-reference.com/c/stdlib.h/strtoul?rev=1708041891&do=diff strtoul #include <stdlib.h> unsigned long int strtoul(const char *str, char **endptr, int base); strtoul Converting a string to an unsigned long integer str: the string to be converted endptr: address of a pointer variable that points to the last character read, so the character that is not owned by a number base: base between 2 and 36 Be found unprefixed numbers, these numbers in base 10 are accepted. If the base '0 'is specified, the strings make a reference to the basis use… text/html 2024-02-16T01:05:41+02:00 https://code-reference.com/c/stdio.h/fprintf?rev=1708041941&do=diff int fprintf(FILE *stream, const char *format, ...); Converts (according to format format) and writes output to stream stream. Number of characters written, or negative value on error, is returned. optional flag: - left adjust + always sign 0 zero pad # Alternate form: for conversion character o, first digit will be zero, for [xX], prefix 0x or 0X to non-zero value, for [eEfgG], always decimal point, for [gG] trailing zeros not removed. optional minimum width: if specified as *… text/html 2024-02-16T01:12:26+02:00 https://code-reference.com/objective-c/foundation.framework/nsnumber.h/initwith?rev=1708042346&do=diff - (id)initWithChar:(char)value; - (id)initWithUnsignedChar:(unsigned char)value; - (id)initWithShort:(short)value; - (id)initWithUnsignedShort:(unsigned short)value; - (id)initWithInt:(int)value; - (id)initWithUnsignedInt:(unsigned int)value; - (id)initWithLong:(long)value; - (id)initWithUnsignedLong:(unsigned long)value; - (id)initWithLongLong:(long long)value; - (id)initWithUnsignedLongLong:(unsigned long long)value; - (id)initWithFloat:(float)value; - (id)initWithDouble:(double)value; - (id)i… text/html 2024-02-16T01:12:25+02:00 https://code-reference.com/objective-c/foundation.framework/nsnumber.h/numberwith?rev=1708042345&do=diff numberWith + (NSNumber *)numberWithChar:(char)value; + (NSNumber *)numberWithUnsignedChar:(unsigned char)value; + (NSNumber *)numberWithShort:(short)value; + (NSNumber *)numberWithUnsignedShort:(unsigned short)value; + (NSNumber *)numberWithInt:(int)value; + (NSNumber *)numberWithUnsignedInt:(unsigned int)value; + (NSNumber *)numberWithLong:(long)value; + (NSNumber *)numberWithUnsignedLong:(unsigned long)value; + (NSNumber *)numberWithLongLong:(long long)value; + (NSNumber *)numberWithUnsi… text/html 2024-02-16T01:04:16+02:00 https://code-reference.com/arduino/constants/integerconstants?rev=1708041856&do=diff Integer constants are numbers used directly in a sketch, like 123. By default, these numbers are treated as int's but you can change this with the U and L modifiers (see below). Normally, integer constants are treated as base 10 (decimal) integers, but special notation (formatters) may be used to enter numbers in other bases. text/html 2024-02-16T01:04:10+02:00 https://code-reference.com/arduino/data_types/unsignedchar?rev=1708041850&do=diff Description An unsigned data type that occupies 1 byte of memory. Same as the byte datatype. The unsigned char datatype encodes numbers from 0 to 255. For consistency of Arduino programming style, the byte data type is to be preferred. Example [=unsigned char myChar = 240;=] See also *byte *int *Arrays *Serial.println text/html 2024-02-16T01:04:22+02:00 https://code-reference.com/arduino/time/millis?rev=1708041862&do=diff Description Returns the number of milliseconds since the Arduino board began running the current program. This number will overflow (go back to zero), after approximately 50 days. Parameters None Returns Number of milliseconds since the program started (unsigned long) text/html 2013-02-15T20:47:55+02:00 https://code-reference.com/arduino/variable_scope_and_qualifiers/variabledeclaration?rev=1360957675&do=diff A variable is a way of naming and storing a value for later use by the program, such as data from a sensor or an intermediate value used in a calculation. Declaring Variables Before they are used, all variables have to be declared. Declaring a variable means defining its type, and optionally, setting an initial value (initializing the variable). Variables do not have to be initialized (assigned a value) when they are declared, but it is often useful. text/html 2013-01-22T13:17:56+02:00 https://code-reference.com/c/datatypes?rev=1358857076&do=diff datatypes Overview Name Description auto auto auto auto bool bool char char const const const const double double float float int int int8 int8 int8 int8 int8_t int8_t int8_t int8_t int16 int16 int16 int16 int16_t int16_t int16_t int16_t int32 int32 int32 int32 int32_t int32_t int32_t int32_t int64 int64 int64 int64 int64_t int64_t int64_t int64_t intmax_t intmax_t intmax_t intmax_t intptr_t intptr_t intptr_t intptr_t int_fast8_t int_fas… text/html 2013-03-01T00:27:36+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_fetch_field?rev=1362094056&do=diff MYSQL_FIELD *mysql_fetch_field(MYSQL_RES *result) description of mysql_fetch_field mysql_fetch_field provides a structure MYSQL_FIELD with information about the current field of quantitative results and advance the field pointer to the next field text/html 2013-02-28T01:21:08+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_escape_string?rev=1362010868&do=diff unsigned long mysql_escape_string(MYSQL *mysql, char *to, const char *from, unsigned long length) description of mysql_escape_string mysql_escape_string escape a mysql string ” will be escaped ; will not be escaped ! mysql_escape_string is outdated use mysql_real_escape_string instead ! text/html 2024-02-16T01:04:31+02:00 https://code-reference.com/arduino/advanced_io/pulsein?rev=1708041871&do=diff Description Reads a pulse (either HIGH or LOW) on a pin. For example, if value is HIGH, pulseIn() waits for the pin to go HIGH, starts timing, then waits for the pin to go LOW and stops timing. Returns the length of the pulse in microseconds. Gives up and returns 0 if no pulse starts within a specified time out. text/html 2017-07-30T01:49:38+02:00 https://code-reference.com/playground/c/stdio.h/printf?rev=1501372178&do=diff printf #include <stdio.h> /* including standard library */ //#include <windows.h> /* uncomment this for Windows */ int printf ( const char * restrict format, ... ); Arguments The function printf prints format to STDOUT Code Description %c character value %s string of characters %d signed integer %i signed integer %f floating point value %e scientific notation, with a lowercase “e” %E scientific notation, with a uppercase “E” %g use %e or %f %G use %E or %f %o octa… text/html 2013-03-01T01:07:32+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_fetch_fields?rev=1362096452&do=diff MYSQL_FIELD *mysql_fetch_fields(MYSQL_RES *result) description of mysql_fetch_fields mysql_fetch_fields provides an array of information about the fields in a amount of result #include <stdio.h> /* including standard library */ #include <mysql/mysql.h> MYSQL *my; MYSQL_RES *result; MYSQL_FIELD *fields; int main( void ) { char host[20]; char user[20]; char pass[20]; my = mysql_init(NULL); sprintf(host,"localhost"); sprintf(user,"username"); sprintf(pass,"password"); if (my == NULL … text/html 2014-08-21T18:09:48+02:00 https://code-reference.com/c/stdio.h/printf?rev=1408637388&do=diff printf #include <stdio.h> /* including standard library */ //#include <windows.h> /* uncomment this for Windows */ int printf ( const char * restrict format, ... ); Arguments The function printf prints format to STDOUT Code Description %c character value %s string of characters %d signed integer %i signed integer %f floating point value %e scientific notation, with a lowercase “e” %E scientific notation, with a uppercase “E” %g use %e or %f %G use %E or %f %o octa… text/html 2013-02-25T23:46:26+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_hex_string?rev=1361832386&do=diff unsigned long mysql_hex_string(char *to, const char *from, unsigned long length) description of mysql_hex_string mysql_hex_string is in work by code-reference.com if you are faster... don't hasitate and add it no example at the moment output of mysql_hex_string c example no example at the moment text/html 2024-02-16T01:05:42+02:00 https://code-reference.com/c/stdio.h/fscanf?rev=1708041942&do=diff fscanf int fscanf(FILE *stream, const char *format, ...); Performs formatted input conversion, reading from stream stream according to format format. The function returns when format is fully processed. Returns number of items converted and assigned, or EOF if end-of-file or error occurs before any conversion. Each of the arguments following format must be a pointer. Format string may contain: text/html 2013-02-26T00:59:07+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_set_local_infile_handler?rev=1361836747&do=diff void mysql_set_local_infile_handler( MYSQL *mysql, int (*local_infile_init)(void **, const char *, void *), int (*local_infile_read)(void *, char *, unsigned int), void (*local_infile_end)(void *), int (*local_infile_error)(void *, char*, unsigned int), void *userdata ); text/html 2013-02-26T00:47:15+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_real_escape_string?rev=1361836035&do=diff unsigned long mysql_real_escape_string(MYSQL *mysql, char *to, const char *from, unsigned long length) description of mysql_real_escape_string mysql_real_escape_string is in work by code-reference.com if you are faster... don't hasitate and add it text/html 2024-02-16T01:04:15+02:00 https://code-reference.com/arduino/bitwise_operators/bitshift?rev=1708041855&do=diff Description From The Bitmath Tutorial in The Playground There are two bit shift operators in C++: the left shift operator << and the right shift operator >>. These operators cause the bits in the left operand to be shifted left or right by the number of positions specified by the right operand.\ More on bitwise math may be found here. text/html 2013-02-16T13:54:31+02:00 https://code-reference.com/arduino/data_types/word?rev=1361019271&do=diff Description A word stores a 16-bit unsigned number, from 0 to 65535. Same as an unsigned int. Example [=word w = 10000; =] See also * byte * WordCast Source: arduino.cc text/html 2024-02-16T01:05:17+02:00 https://code-reference.com/c/datatypes/int?rev=1708041917&do=diff int int Integer 4byte* signed: -2147483648 - 2147483647 unsigned: 0 - 4294967295 2byte signed -32768 - 32767 unsigned: 0 - 65535 *hardware-dependent it is also possible that int 2Bytes big is On a 32 bit system it is 4 bytes You can use to find it out ;) text/html 2024-02-16T01:04:22+02:00 https://code-reference.com/arduino/time/micros?rev=1708041862&do=diff Description Returns the number of microseconds since the Arduino board began running the current program. This number will overflow (go back to zero), after approximately 70 minutes. On 16 MHz Arduino boards (e.g. Duemilanove and Nano), this function has a resolution of four microseconds (i.e. the value returned is always a multiple of four). On 8 MHz Arduino boards (e.g. the LilyPad), this function has a resolution of eight microseconds. text/html 2024-02-16T01:12:26+02:00 https://code-reference.com/objective-c/foundation.framework/nsnumber.h/initwithunsignedint?rev=1708042346&do=diff initWithUnsignedInt - (id)initWithUnsignedInt:(unsigned int)value; ObjC Sourcecode Example unsigned int myUnsignedInt = 1; //******************** Initializing NSNumber Object ************************* //** NSNumbers need to be released, if you`re not working with ARC! ** NSNumber *myUnsignedIntNumber = [[NSNumber alloc]initWithUnsignedInt:myUnsignedInt]; NSLog(@"myUnsignedIntNumber: %@", myUnsignedIntNumber); text/html 2013-02-27T23:02:56+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_data_seek?rev=1362002576&do=diff void mysql_data_seek(MYSQL_RES *result, my_ulonglong offset) description of mysql_data_seek mysql_data_seek find any row in a result set. the offset value is a row number from 0 to mysql_num_rows (result) -1. As required for this feature is that the result set structure contains the entire result set, can mysql_data_seek() may be used only in conjunction with mysql_store_result(), not with mysql_use_result(). text/html 2024-02-16T01:04:50+02:00 https://code-reference.com/c/stdlib.h/srand?rev=1708041890&do=diff srand #include <stdlib.h> void srand(unsigned int seed); Description srand is used to initialize the random number generator. The use of date / time to initialize the generator means that the generated sequence of numbers “random” is. text/html 2024-02-16T01:05:14+02:00 https://code-reference.com/c/datatypes/long?rev=1708041914&do=diff long #include <stdio.h> /* including standard library */ //#include <windows.h> /* uncomment this for Windows */ long 4 Byte signed: -2147483648 - 2147483647 unsigned: 0 - 4294967295 8 Byte signed: -9223372036854775808 - 9223372036854775807 unsigned: 0 - 18446744073709551615 C Sourcecode Example #include <stdio.h> /* including standard library */ //#include <windows.h> /* uncomment this for Windows */ int main(void){ printf("long: %ld bytes\n", sizeof(long) ); } retu… text/html 2013-02-15T19:00:16+02:00 https://code-reference.com/arduino/advanced_io/tone?rev=1360951216&do=diff Description Generates a square wave of the specified frequency (and 50% duty cycle) on a pin. A duration can be specified, otherwise the wave continues until a call to noTone(). The pin can be connected to a piezo buzzer or other speaker to play tones. text/html 2024-02-16T01:05:51+02:00 https://code-reference.com/c/graphics.h/imagesize?rev=1708041951&do=diff imagesize Syntax of imagesize #include <graphics.h> unsigned imagesize(int left, int top, int right, int bottom); Description of imagesize imagesize determines the size of the memory area required to store a bit image. If the size required for the selected image is greater than or equal to 64K - 1 bytes, imagesize returns 0xFFFF (-1). text/html 2013-01-22T02:30:47+02:00 https://code-reference.com/c/keywords?rev=1358818247&do=diff C89 Keywords * auto * break * case * char * const * continue * default * do * double * else * enum * extern * float * for * goto * if * int * long * register * return * short * signed * sizeof * static * struct * switch * typedef * union * unsigned * void * volatile * while text/html 2024-02-16T01:05:50+02:00 https://code-reference.com/c/graphics.h/setlinestyle?rev=1708041950&do=diff setlinestyle Syntax of setlinestyle #include <graphics.h> void setlinestyle(int linestyle, unsigned upattern, int thickness); Description of setlinestyle setlinestyle sets the style for all lines drawn by line, lineto, rectangle, drawpoly, and so on. The linesettingstype structure is defined in graphics.h as follows: struct linesettingstype { int linestyle; unsigned upattern; int thickness; }; linestyle specifies in which of several styles subsequent lines will be drawn (such a… text/html 2024-02-16T01:05:50+02:00 https://code-reference.com/c/graphics.h/setgraphbufsize?rev=1708041950&do=diff setgraphbufsize Syntax of setgraphbufsize #include <graphics.h> unsigned setgraphbufsize(unsigned bufsize); Description of setgraphbufsize Some of the graphics routines (such as floodfill) use a memory buffer that is allocated when initgraph is called and released when closegraph is called. The default size of this buffer, allocated by _graphgetmem, is 4,096 bytes. You might want to make this buffer smaller (to save memory space) or bigger (if, for example, a call to floodfill produces … text/html 2024-02-16T01:03:57+02:00 https://code-reference.com/assembly/8086_88/command_overview?rev=1708041837&do=diff Assembly Language 8086/88 Overview CommandDescriptionExampleAAAASCII adjust after additionno example yetAADASCII adjust before divideno example yetAAMASCII adjust alter multiplyno example yetAASASCII adjust after subtractno example yetADCAdd with carryno example yetADDAddno example yetANDAndno example yetCALLCallno example yetCBWConvert byte to wordno example yetCLCClear carry flagno example yetCLDClear direction flagno example yetCLIClear interrupt flagno example yetCMCComplement carry flagno … text/html 2024-02-16T01:12:07+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_real_connect?rev=1708042327&do=diff #include <mysql/mysql.h> MYSQL *mysql_real_connect( MYSQL *mysql, const char *host, const char *user, const char *password, const char *database, unsigned int port, const char *unix_socket, unsigned int client_flag ); text/html 2013-02-27T23:46:26+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_eof?rev=1362005186&do=diff my_bool mysql_eof(MYSQL_RES *result) description of mysql_eof is used to test whether a quantitative result has been read completely. returns 0 until the end of the results has not yet been reached otherwise value is 0 This function is obsolete,use mysql_errno() or mysql_error() text/html 2013-02-26T23:50:57+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_commit?rev=1361919057&do=diff my_bool mysql_commit(MYSQL *mysql) description of mysql_commit mysql_commit Commits the current transaction. The action of this function is subject to the value of the completion_type system variable. if the value of completion_type is 2, the server performs a release after terminating a transaction and closes the client connection. The client program should call mysql_close(). text/html 2024-02-16T01:05:32+02:00 https://code-reference.com/c/wchar.h/wcstoul?rev=1708041932&do=diff wcstoul #include <wchar.h> unsigned long wcstoul(const wchar_t *restrict, wchar_t **restrict, int); return value C Sourcecode Example no example yet output text/html 2013-03-06T21:20:46+02:00 https://code-reference.com/cpp/time?rev=1362601246&do=diff Time Manipulation clock Clock program (function ) difftime return difference between two times (function ) mktime Convert tm structure to time_t (function ) time Get current time (function ) Conversion text/html 2013-03-06T21:27:57+02:00 https://code-reference.com/cpp/ctime?rev=1362601677&do=diff Time Manipulation Functions clock Clock program difftime return difference between two times mktime Convert tm structure to time_t time Get current time Conversion Functions text/html 2013-02-26T01:07:04+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_warning_count?rev=1361837224&do=diff unsigned int mysql_warning_count(MYSQL *mysql) description of mysql_warning_count mysql_warning_count is in work by code-reference.com if you are faster... don't hasitate and add it no example at the moment output of mysql_warning_count c example no example at the moment text/html 2024-02-16T01:05:43+02:00 https://code-reference.com/c/stdio.h/fread?rev=1708041943&do=diff fread size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream); fread reads num number of objects from a stream (where each object is size bytes) and places them into the array pointed to by buffer. The return value of the function is the number of read data text/html 2013-02-26T00:35:25+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_kill?rev=1361835325&do=diff int mysql_kill(MYSQL *mysql, unsigned long pid) description of mysql_kill mysql_kill is in work by code-reference.com if you are faster... don't hasitate and add it no example at the moment output of mysql_kill c example no example at the moment text/html 2024-02-16T01:05:42+02:00 https://code-reference.com/c/stdio.h/fwrite?rev=1708041942&do=diff size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream); The fwrite() function writes, from the array buffer, count objects of size size to stream. The return value is the number of objects written. C Sourcecode Example /* * fwrite example code * http://code-reference.com/c/stdio.h/fwrite */ #include <stdio.h> /* including standard library */ //#include <windows.h> /* uncomment this for Windows */ struct CD_COLLECTION { char album_name[42]; int year; char arti… text/html 2024-02-16T00:48:24+02:00 https://code-reference.com/c/stdlib.h?rev=1708040904&do=diff Numeric conversions Function Description atof converts a string to a floating-point value atoi converts a string to a integer value atol converts a string to a long integer value strtod converts a string to a double value strtol converts a string to a long integer value strtoul converts a string to a unsigned integer value Mathematical functions Function Description abs c… text/html 2013-02-26T14:38:21+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_get_client_version?rev=1361885901&do=diff unsigned long mysql_get_client_version(void) description of mysql_get_client_version mysql_get_client_version returns the current version of your mysql client usualy returns the number in the following format XXYYZZ XX mainversion YY release level ZZ current version number text/html 2013-02-26T00:48:12+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_real_query?rev=1361836092&do=diff int mysql_real_query(MYSQL *mysql, const char *stmt_str, unsigned long length) description of mysql_real_query mysql_real_query is in work by code-reference.com if you are faster... don't hasitate and add it no example at the moment output of mysql_real_query c example no example at the moment text/html 2013-02-26T00:48:45+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_refresh?rev=1361836125&do=diff int mysql_refresh(MYSQL *mysql, unsigned int options) description of mysql_refresh mysql_refresh is in work by code-reference.com if you are faster... don't hasitate and add it no example at the moment output of mysql_refresh c example no example at the moment text/html 2024-02-16T01:04:11+02:00 https://code-reference.com/arduino/data_types/char?rev=1708041851&do=diff Description A data type that takes up 1 byte of memory that stores a character value. Character literals are written in single quotes, like this: [= 'A' =] (for multiple characters - strings - use double quotes: “ABC”). Characters are stored as numbers however. You can see the specific encoding in the ASCII chart. This means that it is possible to do arithmetic on characters, in which the ASCII value of the character is used (e.g. [= 'A' + 1 =] has the value 66, since the ASCII value of th… text/html 2013-02-26T15:14:48+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_get_proto_info?rev=1361888088&do=diff unsigned int mysql_get_proto_info(MYSQL *mysql) description of mysql_get_proto_info returns Protocol Version of current connection compile with gcc mysql_get_host_info.c -o mysql_get_host_info `mysql_config –cflags –libs` -Wall #include <stdio.h> /* including standard library */ #include <mysql/mysql.h> MYSQL *my; int main( void ){ char host[20]; char user[20]; char pass[20]; my = mysql_init(NULL); sprintf(host,"localhost"); sprintf(user,"user"); sprintf(pass,"pass"); if (my … text/html 2013-02-26T15:14:05+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_get_server_version?rev=1361888045&do=diff unsigned long mysql_get_server_version(MYSQL *mysql) description of mysql_get_server_version mysql_get_server_version() returns the current version of your mysql client usualy returns the number in the following format XXYYZZ XX mainversion YY release level ZZ current version number text/html 2013-02-27T23:56:30+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_errno?rev=1362005790&do=diff unsigned int mysql_errno(MYSQL *mysql) description of mysql_errno returns the error number for the last unsuccessful running function. if the function is successful, it returns 0. in case of an error the error number and the type of error appears text/html 2024-02-16T01:04:12+02:00 https://code-reference.com/arduino/data_types/byte?rev=1708041852&do=diff Description A byte stores an 8-bit unsigned number, from 0 to 255. Example [=byte b = B10010; // "B" is the binary formatter (B10010 = 18 decimal) =] See also * word * byte * Variable Declaration Source: arduino.cc text/html 2013-02-26T23:56:06+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_create_db?rev=1361919366&do=diff int mysql_create_db(MYSQL *mysql, const char *db) description of mysql_create_db creates the database named by the db parameter. mysql_create_db deprecated use mysql_query() to create a database #include <stdio.h> /* including standard library */ #include <mysql/mysql.h> MYSQL *my; MYSQL_ROW row; MYSQL_RES *mysql_res; int main( void ){ char host[20]; char user[20]; char pass[20]; unsigned long numrows = 0; my = mysql_init(NULL); sprintf(host,"localhost"); sprintf(user,"usernam… text/html 2013-02-03T23:05:50+02:00 https://code-reference.com/c/limits.h/ushrt_max?rev=1359929150&do=diff USHRT_MAX description of USHRT_MAX max value of unsigned short (65.536) text/html 2024-02-16T01:05:53+02:00 https://code-reference.com/c/graphics.h/putimage?rev=1708041953&do=diff putimage Syntax of putimage #include <graphics.h> void putimage(int left, int top, void *bitmap, int op); Description of putimage putimage puts the bit image previously saved with getimage back onto the screen, with the upper left corner of the image placed at (left,top). bitmap points to the area in memory where the source image is stored. The op parameter to putimage specifies a combination operator that controls how the color for each destination pixel onscreen is computed, based on … text/html 2024-02-16T01:05:58+02:00 https://code-reference.com/c/graphics.h/getimage?rev=1708041958&do=diff getimage Syntax of getimage #include <graphics.h> void getimage(int left, int top, int right, int bottom, void *bitmap); Description of getimage getimage copies an image from the screen to memory. left, top, right, and bottom define the screen area to which the rectangle is copied. bitmap points to the area in memory where the bit image is stored. The first two words of this area are used for the width and height of the rectangle; the remainder holds the image itself. text/html 2024-02-16T01:05:51+02:00 https://code-reference.com/c/graphics.h/setallpalette?rev=1708041951&do=diff setallpalette Syntax of setallpalette #include <graphics.h> void setallpalette(struct palettetype *palette); Description of setallpalette setallpalette sets the current palette to the values given in the palettetype structure pointed to by palette. You can partially (or completely) change the colors in the EGA/VGA palette with setallpalette. The MAXCOLORS constant and the palettetype structure used by setallpalette are defined in graphics.h as follows: #define MAXCOLORS 15 struct pale… text/html 2024-02-16T01:06:04+02:00 https://code-reference.com/c/dos.h/delay?rev=1708041964&do=diff void delay(unsigned int); description of delay delay function is used to suspend execution of a program for a particular time the parameter are number of milliseconds ( 1 second = 1000 milliseconds) #include<stdio.h> #include<dos.h> int main( void ) { printf("This c program quits in 42 seconds.\n"); delay(42000); return 0; } text/html 2024-02-16T01:05:29+02:00 https://code-reference.com/c/wchar.h/wcstoull?rev=1708041929&do=diff wcstoull #include <wchar.h> unsigned long long wcstoull(const wchar_t *restrict, wchar_t **restrict, int); return value C Sourcecode Example no example yet output text/html 2024-02-16T01:04:11+02:00 https://code-reference.com/arduino/data_types/short?rev=1708041851&do=diff Description A short is a 16-bit data-type. On all Arduinos (ATMega and ARM based) a short stores a 16-bit (2-byte) value. This yields a range of -32,768 to 32,767 (minimum value of -2^15 and a maximum value of (2^15) - 1). Example [=short ledPin = 13;=] Syntax [=short var = val;=] *var - your short variable name *val - the value you assign to that variable text/html 2013-02-03T23:04:04+02:00 https://code-reference.com/c/limits.h/uint_max?rev=1359929044&do=diff UINT_MAX description of UINT_MAX max value of unsigned int (65.535) text/html 2013-02-03T23:04:59+02:00 https://code-reference.com/c/limits.h/ulong_max?rev=1359929099&do=diff ULONG_MAX description of ULONG_MAX max value of unsigned long (4.294.967.295) text/html 2013-02-03T23:02:29+02:00 https://code-reference.com/c/limits.h/uchar_max?rev=1359928949&do=diff UCHAR_MAX description of UCHAR_MAX max value of unsigned char (255) text/html 2024-02-16T01:04:11+02:00 https://code-reference.com/arduino/data_types/long?rev=1708041851&do=diff !long Description Long variables are extended size variables for number storage, and store 32 bits (4 bytes), from -2,147,483,648 to 2,147,483,647. Example long speedOfLight = 186000L; // see Integer Constants for explanation of the 'L' Syntax [=long var = val;=] *var - the long variable name *val - the value assigned to the variable text/html 2024-02-16T01:06:05+02:00 https://code-reference.com/c/dos.h/sound?rev=1708041965&do=diff void sound( unsigned int ); description of sound Producessound of a specified frequency. mostly used for adding music to c program random values and delay needed to make some strange sounds. #include<stdio.h> #include<dos.h> int main(void) { int i; for ( i = 42 ; i <= 4200 ; i ++ ) { i = i + rand(100); sound(i); delay(50); } nosound(); return 0; } text/html 2024-02-16T01:05:58+02:00 https://code-reference.com/c/graphics.h/getpalette?rev=1708041958&do=diff getpalette Syntax of getpalette #include <graphics.h> void getpalette(struct palettetype *palette); Description of getpalette getpalette fills the palettetype structure pointed to by palette with information about the current palette's size and colors. The MAXCOLORS constant and the palettetype structure used by getpalette are defined in graphics.h as follows: #define MAXCOLORS 15 struct palettetype { unsigned char size; signed char colors[MAXCOLORS + 1]; }; size gives the numbe… text/html 2024-02-16T01:06:00+02:00 https://code-reference.com/c/keywords/unsigned?rev=1708041960&do=diff see unsigned text/html 2024-02-16T01:04:12+02:00 https://code-reference.com/arduino/data_types/int?rev=1708041852&do=diff Description Integers are your primary data-type for number storage. On the Arduino Uno (and other ATMega based boards) an int stores a 16-bit (2-byte) value. This yields a range of -32,768 to 32,767 (minimum value of -2^15 and a maximum value of (2^15) - 1). text/html 2024-02-16T01:05:47+02:00 https://code-reference.com/c/graphics.h/getlinesettings?rev=1708041947&do=diff getlinesettings Syntax of getlinesettings #include <graphics.h> void getlinesettings(struct linesettingstype *lineinfo); Description of getlinesettings getlinesettings fills a linesettingstype structure pointed to by lineinfo with information about the current line style, pattern, and thickness. The linesettingstype structure is defined in graphics.h as follows: struct linesettingstype { int linestyle; unsigned upattern; int thickness; }; linestyle specifies in which style subs… text/html 2013-02-26T01:05:56+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_thread_id?rev=1361837156&do=diff unsigned long mysql_thread_id(MYSQL *mysql) description of mysql_thread_id mysql_thread_id is in work by code-reference.com if you are faster... don't hasitate and add it no example at the moment output of mysql_thread_id c example no example at the moment text/html 2024-02-16T01:05:13+02:00 https://code-reference.com/c/datatypes/char?rev=1708041913&do=diff char char Character value or small integer 1byte signed: -128 to 127 unsigned: 0 to 255 You can use to find it out ;) C Sourcecode Example #include <stdio.h> /* including standard library */ //#include <windows.h> /* uncomment this for Windows */ int main(void) { printf("char: %d bytes\n", sizeof(char) ); return 0; } text/html 2013-02-25T23:39:43+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_field_count?rev=1361831983&do=diff unsigned int mysql_field_count(MYSQL *mysql) description of mysql_field_count mysql_field_count is in work by code-reference.com if you are faster... don't hasitate and add it no example at the moment output of mysql_field_count c example no example at the moment text/html 2013-02-26T00:40:14+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_num_fields?rev=1361835614&do=diff unsigned int mysql_num_fields(MYSQL_RES *result) description of mysql_num_fields mysql_num_fields is in work by code-reference.com if you are faster... don't hasitate and add it no example at the moment output of mysql_num_fields c example no example at the moment text/html 2013-02-25T23:36:49+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_fetch_lengths?rev=1361831809&do=diff unsigned long *mysql_fetch_lengths(MYSQL_RES *result) description of mysql_fetch_lengths mysql_fetch_lengths is in work by code-reference.com if you are faster... don't hasitate and add it no example at the moment output of mysql_fetch_lengths c example no example at the moment text/html 2024-02-16T01:05:10+02:00 https://code-reference.com/c/datatypes/short?rev=1708041910&do=diff short short 2 Byte signed: -32768 - 32767 unsigned: 0 - 65535 C Sourcecode Example #include <stdio.h> /* including standard library */ //#include <windows.h> /* uncomment this for Windows */ int main(void) { printf("short: %d bytes\n", sizeof(short) ); return 0; } text/html 2013-02-25T23:35:30+02:00 https://code-reference.com/c/mysql/mysql.h/mysql_fetch_field_direct?rev=1361831730&do=diff MYSQL_FIELD *mysql_fetch_field_direct(MYSQL_RES *result, unsigned int fieldnr) description of mysql_fetch_field_direct mysql_fetch_field_direct is in work by code-reference.com if you are faster... don't hasitate and add it no example at the moment text/html 2024-02-16T01:04:22+02:00 https://code-reference.com/arduino/time/delay?rev=1708041862&do=diff Description Pauses the program for the amount of time (in miliseconds) specified as parameter. (There are 1000 milliseconds in a second.) Syntax delay(ms) Parameters ms: the number of milliseconds to pause (unsigned long) Returns nothing Example int ledPin = 13; // LED connected to digital pin 13 void setup() { pinMode(ledPin, OUTPUT); // sets the digital pin as output } void loop() { digitalWrite(ledPin, HIGH); // sets the LED on delay(1000); … text/html 2015-08-11T17:59:20+02:00 https://code-reference.com/c/graphics.h/getpixel?rev=1439308760&do=diff getpixel Syntax of getpixel #include <graphics.h> unsigned getpixel(int x, int y); Description of getpixel getpixel gets the color of the pixel located at (x,y). Example of getpixel /* getpixel example */ #include <graphics.h> #include <stdlib.h> #include <stdio.h> #include <conio.h> #include <dos.h> #define PIXEL_COUNT 1000 #define DELAY_TIME 100 /* in milliseconds */ int main(void) { /* request autodetection */ int gdriver = DETECT, gmode, errorcode; int i, x, y, col… text/html 2024-02-16T01:04:36+02:00 https://code-reference.com/cpp/datatypes/int?rev=1708041876&do=diff int int Integer 4byte* signed: -2147483648 - 2147483647 unsigned: 0 - 4294967295 Cpp Sourcecode Example #include <iostream> using namespace std; int main() { cout << "Size of int: " << sizeof(int) << " bytes" << endl; return 0; } text/html 2024-02-16T01:04:22+02:00 https://code-reference.com/arduino/time/delaymicroseconds?rev=1708041862&do=diff Description Pauses the program for the amount of time (in microseconds) specified as parameter. There are a thousand microseconds in a millisecond, and a million microseconds in a second. Currently, the largest value that will produce an accurate delay is 16383. This could change in future Arduino releases. For delays longer than a few thousand microseconds, you should use delay() instead.