#include<stdio.h>

struct mathops {
	int (*main_op)(int);
};

int cube(int x){
	return x*x*x;
}

int main(){

	int n = 3;
	printf("cube(n) = %d\n", cube(n));

	struct mathops my_math;
	my_math.main_op = cube;  // A function pointer is stored in a structure

	printf("main op applied to 16 = %d\n", my_math.main_op(16)); // Using a function pointer in a struct

	struct mathops *ptr_to_mymath;
	ptr_to_mymath = &my_math;

	printf("main op applied to 4 = %d\n", (*ptr_to_mymath).main_op(4)); // Using a function pointer in a struct
	printf("main op applied to 5 = %d\n", ptr_to_mymath->main_op(5)); // Using a function pointer in a struct


	if(8 && 6){
		printf("8 && 6\n");
	} else {
		printf("NOT 8 && 6\n");
	}

	if(8 & 6){
		printf("8 & 6\n");
	} else {
		printf("NOT 8 & 6\n");
	}

	return 0;
}