c:stdio.h:feof
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c:stdio.h:feof [2013/01/22 22:02] |
c:stdio.h:feof [2024/02/16 01:05] (current) |
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| + | {{keywords>wiki library source code example reference}} | ||
| + | ====== feof ====== | ||
| + | |||
| + | <code c> | ||
| + | int feof(FILE *stream); | ||
| + | </code> | ||
| + | checks that are applied to a stream or data or the end-of-file indicator is set.\\ | ||
| + | Used to determine if the end of the file (stream) specified, has been reached. When a file is being read sequentially one line, or one piece of data at a time (by means of a loop, say), this is the function you check every iteration, to see if the end of the file has come.\\ | ||
| + | Returns non-zero if end-of-file indicator is set for stream stream. | ||
| + | ===== C Sourcecode Example ===== | ||
| + | <code c> | ||
| + | /* | ||
| + | * feof example code | ||
| + | * http://code-reference.com/c/stdio.h/feof | ||
| + | */ | ||
| + | #include <stdio.h> /* including standard library */ | ||
| + | //#include <windows.h> /* uncomment this for Windows */ | ||
| + | |||
| + | #define MAX 1000 | ||
| + | |||
| + | int main( void ) | ||
| + | { | ||
| + | char buffer[MAX]; | ||
| + | FILE *filestream; | ||
| + | filestream = fopen("test.txt","r"); | ||
| + | |||
| + | while (feof(filestream) == 0) | ||
| + | { | ||
| + | fgets(buffer, MAX, filestream); | ||
| + | if (buffer[0] == '#') { | ||
| + | continue; | ||
| + | } | ||
| + | else { | ||
| + | printf("%s",buffer); | ||
| + | } | ||
| + | buffer[0]='\0'; | ||
| + | } | ||
| + | fclose(filestream); | ||
| + | return 0; | ||
| + | } | ||
| + | |||
| + | </code> | ||
| + | |||
| + | content of **test.txt** | ||
| + | <code c> | ||
| + | Line 1 | ||
| + | #Line 2 | ||
| + | Line 3 | ||
| + | #Line 4 | ||
| + | Line 5 | ||
| + | </code> | ||
| + | |||
| + | ==== feof output ==== | ||
| + | |||
| + | user@host:~$ ./feof | ||
| + | Line 1 | ||
| + | Line 3 | ||
| + | Line 5 | ||
| + | |||
| + | ==== See also ==== | ||
| + | [[c:stdio.h:clearerr|clearerr()]] [[c:stdio.h:ferror|ferror()]] [[c:stdio.h:perror|perror()]] [[c:stdio.h:putc|putc()]] [[c:stdio.h:getc|getc()]] | ||
| + | |||
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