Can't find a way to run this program. I followed my instructor's directions, but this error still pops up.
#include<stdio.h>
#include<math.h>
#define CALS_PER_GR_PROTEIN 4
#define CALS_PER_GR_CARB 4
#define CALS_PER_GR_FAT 9
int main() {
int a, b, c, d, e, f, g;
printf("How many grams of fat did you eat?");
scanf("%d", &a);
printf("How many grams of carbs did you eat?");
scanf("%d", &b);
c = a * CALS_PER_GR_FAT;
d = b * CALS_PER_GR_PROTEIN;
e = b * CALS_PER_GR_CARB;
printf("You ate %d calories.\n", c + d + e);
return 0;
}