Write a character to standard output
#include <stdio.h> int putchar( int c );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The putchar() function writes the character c, cast as (int)(unsigned char), to the stdout stream. It's equivalent to:
fputc( c, stdout );
The character written, cast as (int)(unsigned char), or EOF if an error occurs (errno is set).
#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; }
Safety: | |
---|---|
Cancellation point | Yes |
Interrupt handler | No |
Signal handler | No |
Thread | Yes |