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Write a character to stdout
#include <stdio.h>
int fputchar( int c );
- c
- The character you want to write.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The fputchar() function writes the character specified by
c, cast as (int)(unsigned char), to stdout.
It's equivalent to
putchar() and to:
fputc( c, stdout );
The character written, cast as (int)(unsigned char), or
EOF if an error occurred
(errno is set).
#include <stdio.h>
#include <stdlib.h>
int main( void )
{
FILE *fp;
int c;
fp = fopen( "file", "r" );
if( fp != NULL ) {
c = fgetc( fp );
while( c != EOF ) {
fputchar( c );
c = fgetc( fp );
}
fclose( fp );
return EXIT_SUCCESS;
}
return EXIT_FAILURE;
}
QNX 4
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
No |
Thread |
Yes |
If c is negative, the value returned by this function
isn't equal to c — unless c is -1 and an error
occurred :-)
errno,
fgetc(),
fgetchar(),
fprintf(),
fputc(),
fputs(),
putc(),
putchar()
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