_fgetchar, _fgetwchar
Reads a character from stdin.
int _fgetchar( void );
wint_t _fgetwchar( void );
Возвращаемое значение
_fgetchar returns the character read as an int or return EOF to indicate an error or end of file. **_**fgetwchar returns, as a wint_t, the wide character that corresponds to the character read or returns WEOF to indicate an error or end of file. For both functions, use feof or ferror to distinguish between an error and an end-of-file condition.
Заметки
These functions read a single character from stdin. The function then increments the associated file pointer (if defined) to point to the next character. If the stream is at end of file, the end-of-file indicator for the stream is set.
_fgetchar is equivalent to fgetc( stdin ). It is also equivalent to getchar, but implemented only as a function, rather than as a function and a macro. _fgetwchar is the wide-character version of _fgetchar.
These functions are not compatible with the ANSI standard.
Generic-Text Routine Mappings
Tchar.h routine |
_UNICODE and _MBCS not defined |
_MBCS defined |
_UNICODE defined |
|---|---|---|---|
_fgettchar |
_fgetchar |
_fgetchar |
_fgetwchar |
Требования
Function |
Required header |
|---|---|
_fgetchar |
<stdio.h> |
_fgetwchar |
<stdio.h> or <wchar.h> |
For more compatibility information, see Compatibility in the Introduction.
Пример
// crt_fgetchar.c
// This program uses _fgetchar to read the first
// 80 input characters (or until the end of input)
// and place them into a string named buffer.
//
#include <stdio.h>
#include <stdlib.h>
int main( void )
{
char buffer[81];
int i, ch;
// Read in first 80 characters and place them in "buffer":
ch = _fgetchar();
for( i=0; (i < 80 ) && ( feof( stdin ) == 0 ); i++ )
{
buffer[i] = (char)ch;
ch = _fgetchar();
}
// Add null to end string
buffer[i] = '\0';
printf( "%s\n", buffer );
}
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