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| 22.41.1.vscanf, vfscanf, and vsscanf |
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| Item | Value | | Header file | stdarg.h
stdio.h | | Declaration | int vscanf(char * restrict format, va_list arg_ptr);
int vfscanf(FILE * restrict stream, const char * restrict format,va_list arg_ptr);
int vsscanf(char * restrict buf, const char * restrict format, va_list arg_ptr); |
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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scanf(), fscanf(), and sscanf(), respectively, except that the argument list has been replaced by a pointer to a list of arguments.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 header . |
#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;
}
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| 22.41.vscanf vfscanf vsscanf | | 22.41.1. | vscanf, vfscanf, and vsscanf | | |
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