#include <stdio.h>

int bounce(int a);
int caller ((int(*function), (int), int b);

    int main() {
        int num;
        int (*fptr) (int)=bounce;

        num=(*fptr) (10);
        printf("Returned value: %d \n", num);

        num=caller(fptr, 5);
        printf("Returned value; %d \n", num);

        return 0;
    }

    int bounce(int a) {
        printf("\n Received value: %d \n", a);
        return ((3 * a) + 3);
    }

    int caller((int(*function) (int), int b) {
        (function*) (b);
    }