vfpfintf

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>

FILE *fp;

int vfpf(char *fmt, ...)
{
va_list argptr;
int cnt;

va_start(argptr, fmt);
cnt = vfprintf(fp, fmt, argptr);
va_end(argptr);

return(cnt);
}

int main(void)
{
int inumber = 30;
float fnumber = 90.0;
char string[4] = "abc";

fp = tmpfile();
if (fp == NULL)
{
perror("tmpfile() call");
exit(1);
}

vfpf("%d %f %s", inumber, fnumber, string);
rewind(fp);
fscanf(fp,"%d %f %s", &inumber, &fnumber, string);
printf("%d %f %s\n", inumber, fnumber, string);
fclose(fp);

return 0;
}