https://code-reference.com/ 2026-06-21T05:23:57+02:00 https://code-reference.com/ https://code-reference.com/ttps://code-reference.com/lib/tpl/dokuwiki/images/favicon.ico text/html 2024-02-16T00:48:20+02:00 https://code-reference.com/cpp/cassert?rev=1708040900&do=diff cassert Overview Name Description assert assert automatically generated overview ... Change this page if you have a better description text/html 2024-02-16T00:48:21+02:00 https://code-reference.com/cpp/cctype?rev=1708040901&do=diff character classification Function Description isalnum checks if char is alphanumeric isalpha checks if char is alphabetic isascii checks if char is an ascii char isblank checks if char is blank iscntrl checks if char is a control char isdigit checks if char is a digit isgraph checks if char is printing character except space (' ') islower checks… text/html 2024-02-16T00:48:20+02:00 https://code-reference.com/cpp/cmath?rev=1708040900&do=diff mathematical functions Function Description acos calculates arccosine asin calculates arcsine from a number atan calculates acustangens from a number atan2 calculates arctangent from 2 numbers ceil rounding up floating point cos calculates the cosine of a degree cosh calculates the hyperbolic cosine of a number exp calculates the exponential value of a nu… text/html 2013-06-14T16:08:07+02:00 https://code-reference.com/cpp/constant?rev=1371218887&do=diff #ifndef #define #if #elif #endif text/html 2013-06-14T16:09:47+02:00 https://code-reference.com/cpp/control_structures?rev=1371218987&do=diff control structures Overview Name Description break break continue continue do do goto goto if if return return while while Switchused for finding the specific case of a set of scenarios automatically generated overview ... Change this page if you have a better description 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 2018-01-12T07:29:08+02:00 https://code-reference.com/cpp/define?rev=1515738548&do=diff #define #define cpp cout << "C++" << endl; #define is used for creating names that will overwrite the current event. For example: // we are going to make a program that will use a #define for replacing a number #include <iostream> #include <cmath> #define FIVE 5 using namespace std; int main() { cout << "The normal square root of 5 is: " << sqrt(FIVE) << endl; cout << "The int square root of 5 is: " << (int)sqrt(FIVE) << endl; return 0; } text/html 2014-02-20T17:59:00+02:00 https://code-reference.com/cpp/editing_the_value_of_variables?rev=1392915540&do=diff To edit the value of a variable, you use the mathematical operators +, -, /, and *. Let's create the variable jimmy and set it to nine : int jimmy = 9; If we want jimmy to to set to 10 we can do the following: jimmy = jimmy + 1; Remember this syntax: [the varaible that you want to change] = [the number or existing varaible] ; text/html 2013-06-13T18:48:11+02:00 https://code-reference.com/cpp/fstream?rev=1371142091&do=diff fstream fstream is used for opening/writing to files in c++. Here is an example #include <fstream> int main() { //create file ofstream file; // part of the fstream class // write to a file file.write("hello world!"); // close file file.close(); } text/html 2013-03-29T16:39:16+02:00 https://code-reference.com/cpp/help_us?rev=1364571556&do=diff help us Overview Name Description to_write_the_content to_write_the_content text/html 2024-02-16T00:48:20+02:00 https://code-reference.com/cpp/iostream?rev=1708040900&do=diff iostream ---------- cout The common output of data in c++ cin The common input of data in c++ 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 2014-06-04T18:45:53+02:00 https://code-reference.com/cpp/variables?rev=1401900353&do=diff Variables Variables are the means of storing data in a program. Say you want to make a calculator, you need to use variables. Say you want to make a program that takes in a word and then modifies it, you need to use variables. Variables can be created and “destroyed”(deconstructing comes later on so don't get your hopes up). The value or information that they store can be changed and in some cases, that you make it so, cannot be. Except for the syntax of the language, you are in control!