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putc()

Write a character to a stream

Synopsis:

#include <stdio.h>

int putc( int c, 
          FILE* fp );

Arguments:

c
The character that you want to write.
fp
The stream you want to write the character on.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The putc() macro writes the character c, cast as (int)(unsigned char), to the output stream designated by fp.

Returns:

The character written, cast as (int)(unsigned char), or EOF if an error occurs (errno is set).

Examples:

#include <stdio.h>
#include <stdlib.h>

int main( void )
{
    FILE* fp;
    int c;

    fp = fopen( "file", "r" );
    if( fp != NULL ) {
        while( (c = fgetc( fp )) != EOF ) {
            putc( c, stdout );
        }
        fclose( fp );
    }
    
    return EXIT_SUCCESS;
}

Classification:

ANSI, POSIX 1003.1

Safety:
Cancellation point Yes
Interrupt handler No
Signal handler No
Thread Yes

Caveats:

putc() is a macro.

See also:

errno, ferror(), fopen(), fputc(), fputchar(), fputs(), getc(), getc_unlocked(), getchar(), getchar_unlocked(), putchar(), putchar_unlocked(), putc_unlocked(), puts()


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