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Get the next character from a file
#include <stdio.h>
int getc( FILE* fp );
- fp
- The stream you want to get the character from.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The getc() macro gets the next character from the stream
designated by fp. The character is returned as an int
value.
The next character from the stream fp,
cast as (int)(unsigned char), or EOF if
an end-of-file or error condition occurs
(errno is set).
|
Use
feof()
or
ferror()
to distinguish an end-of-file condition from an error. |
#include <stdio.h>
#include <stdlib.h>
int main( void )
{
FILE* fp;
int c;
fp = fopen( "file", "r" );
if( fp != NULL ) {
while( (c = getc( fp )) != EOF ) {
putchar(c);
}
fclose( fp );
return EXIT_SUCCESS;
}
return EXIT_FAILURE;
}
ANSI,
POSIX 1003.1
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
No |
Thread |
Yes |
getc() is a macro.
errno,
feof(),
ferror(),
fgetc(),
fgetchar(),
fgets(),
fopen(),
getchar(),
gets(),
putc(),
putc_unlocked(),
putchar(),
putchar_unlocked(),
ungetc()
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