Question

#include<stdio.h>
#include<string.h>

int main()
{
   char buffer[32];
   char c;
   int i;
   printf("input: ");
   fgets(buffer, 32, stdin);
   printf("items filled: %d\n", sscanf("%c%d\n", &c, &i));
   printf("%c%d\n", c, i);
   return 0;
}

When typing a character followed by a number “f7”, im expecting “f” to go into variable c, and “7” to go into variable i. For some reason, sscanf() fails to fill both, and I’m getting their initial garbage values. What am I doing wrong?

Answer 1

Actual sscanf() signature is this :

int sscanf(const char *str, const char *format, ...);

check your signature of sscanf() you have used wrong signature

It should be

sscanf(buffer,"%c%d\n", &c, &i);