_fputchar, _fputwchar

Writes a character to stdout.

Syntax

int _fputchar(
   int c
);
wint_t _fputwchar(
   wchar_t c
);

Parameters

c
Character to be written.

Return value

Each of these functions returns the character written. For _fputchar, a return value of EOF indicates an error. For _fputwchar, a return value of WEOF indicates an error. If c is NULL, these functions generate an invalid parameter exception, as described in Parameter validation. If execution is allowed to continue, _fputchar returns EOF (_fputwchar returns WEOF), and they set errno to EINVAL.

For more information about these and other error codes, see errno, _doserrno, _sys_errlist, and _sys_nerr.

Remarks

Both of these functions write the single character argument c to stdout and advance the indicator as appropriate. _fputchar is equivalent to fputc( stdout ). It's also equivalent to putchar, but implemented only as a function, rather than as a function and a macro. Unlike fputc and putchar, these functions aren't compatible with the ANSI standard.

By default, this function's global state is scoped to the application. To change this behavior, see Global state in the CRT.

Generic-text routine mappings

Requirements

The console isn't supported in Universal Windows Platform (UWP) apps. The standard stream handles that are associated with the console—stdin, stdout, and stderr—must be redirected before C run-time functions can use them in UWP apps. For more compatibility information, see Compatibility.

Example

// crt_fputchar.c
// This program uses _fputchar
// to send a character array to stdout.

#include <stdio.h>

int main( void )
{
    char strptr[] = "This is a test of _fputchar!!\n";
    char *p = NULL;

    // Print line to stream using _fputchar.
    p = strptr;
    while( (*p != '\0') && _fputchar( *(p++) ) != EOF )
      ;
}

This is a test of _fputchar!!

See also

Stream I/O
fgetc, fgetwc
putc, putwc