Pointers

#include <iostream>

void unknown(int* p, int num) {
    int *q = &num;
    *p = *q + 2;
    num = 7;
}

void hardToFollow(int* p, int q, int *num) {
    *p = q + *num;
    *num = q;
    num = p;
    p = &q;
    unknown(num, *p);
}

int main() {
    int* q;
    int trouble[3];
    trouble[0] = 1;
    q = &trouble[1];
    *q = 2;
    trouble[2] = 3;
    hardToFollow(q, trouble[0], &trouble[2]);
    unknown(&trouble[0], *q);
    std::cout << *q << ", " << trouble[0];
    std::cout << ", " << trouble[2] << std::endl;
    getchar();
    return 0;
    //3, 5, 1
}