#include <stdio.h>

//typedef int (fp)(int, int)//(fp) brackets are imp
int add(int a, int b) {
    int sum = a + b;
    return sum;  // You need to return the sum from the function.
}

int main() {
    int (*fp)(int, int);  // Declare a function pointer that points to a function taking two ints and returning int.
    fp = &add;  // Assign the address of the 'add' function to the function pointer.
    int sum = fp(5, 7);  // Call the function through the function pointer.
    printf("%d", sum);
    return 0;
}