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Get a character from stdin
#include <stdio.h>
int getchar( void );
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The getchar() function is equivalent to getc()
on the stdin stream.
The next character from the input stream pointed to by stdin,
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;
/* Get characters from "file" instead of
* stdin.
*/
fp = freopen( "file", "r", stdin );
while( ( c = getchar() ) != EOF ) {
putchar(c);
}
fclose( fp );
return EXIT_SUCCESS;
}
ANSI,
POSIX 1003.1
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
No |
Thread |
Yes |
errno,
feof(),
ferror(),
fgetc(),
fgetchar(),
getc(),
putc(),
putc_unlocked(),
putchar(),
putchar_unlocked()
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