#include <iostream>

using namespace std;

int x(int);
char * y(char *);

int main() {

    x(5);
    y("hello");

    int (*p) (int); //pointer to function x
    char * (*q) (char *); //pointer to function y

    p = &x; //holds the address of function x
    q = &y; //holds the address of function y

    cout << p << endl;
    cout << q;

    return 0;
}

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

char * y(char *b) {
    return (b);
}

cout << (void*)p << endl;