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3.1.61.vsscanf() #
NAME
vscanf, vsscanf, vfscanf – convert formatted input
SYNOPSIS
#include <stdio.h>
- int vscanf (const char *format, __va_list);
- int vsscanf (const char * s, const char *format, __va_list);
- int vfscanf (FILE * strm, const char *format, __va_list);
DESCRIPTION
The functions vscanf(), vfscanf(), and vsscanf() are functionally equivalent to scanf() , fscanf(), and sscanf(), respectively, except that the argument list has been replaced by a pointer to a list of arguments. This pointer must be of type va_list, which is defined in the <stdarg.h> header
vscanf() reads from the standard input stream, stdin.
vfscanf() reads from the stream strm.
vsscanf() reads from the character string s.
RETURN VALUES
Refer to fscanf().
ERRORS
Refer to fscanf().
EXAMPLES
#include<stdio.h>
#include<stdarg.h>
void
get_message(
char
*format,
...)
{
va_list
ptr;
va_start(ptr, format);
vscanf(format,
ptr);
va_end(ptr);
}
int
main(
void
)
{
int
i;
printf("integer:");
get_message("
%d ", &i);
printf("%d",i);
return
0;
}
SEE ALSO