putchar()

Write a character to stdout

Synopsis:

#include <stdio.h>

int putchar( int c );

Library:

libc

Description:

The putchar() function writes the character c, cast as (int)(unsigned char), to the stdout stream. It's equivalent to:

fputc( c, stdout );

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" );
    c = fgetc( fp );
    while( c != EOF ) {
        putchar( c );
        c = fgetc( fp );
    }
    fclose( fp );
    
    return EXIT_SUCCESS;
}

Classification:

ANSI

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