fprintf, fwprintf (Windows CE 5.0)
Developing an Application > Microsoft C Run-time Library for Windows CE > Run-time Library Reference
Print formatted data to a stream.
int fprintf( FILE* stream,const char*format [, argument ]...
);int fwprintf( FILE*stream,const wchar_t*format [, argument ]...);
Parameters
- stream
Pointer to FILE structure. - format
Format-control string. - argument
Optional arguments.
Return Values
fprintf returns the number of bytes written.
fwprintf returns the number of wide characters written.
Both functions returns a negative value when an output error occurs.
Remarks
fprintf formats and prints a series of characters and values to the output stream. Each function argument (if any) is converted and output according to the corresponding format specification in format.
For fprintf, the format argument has the same syntax and use that it has in printf.
fwprintf is a wide-character version of fprintf; in fwprintf, format is a wide-character string. These functions behave identically otherwise.
Generic-Text Routine Mappings
| TCHAR.H Routine | _UNICODE Defined |
|---|---|
| _ftprintf | fwprintf |
For more information about Tchar.h routines, see Generic Text Mappings.
Example
/* FPRINTF.C: This program uses fprintf to format various
* data and print it to the file named FPRINTF.OUT.
*/
#include <stdio.h>
FILE *stream;
void main( void )
{
int i = 10;
double fp = 1.5;
char s[] = "this is a string";
char c = '\n';
stream = fopen( "fprintf.out", "w" );
fprintf( stream, "%s%c", s, c );
fprintf( stream, "%d\n", i );
fprintf( stream, "%f\n", fp );
fclose( stream );
}
Output
this is a string
10
1.500000
Requirements
OS Versions: Windows CE 2.0 and later.
Header: stdlib.h.
Link Library: coredll.dll.
See Also
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