// 24T2 COMP1511 Week 5 Lecture 2
// Tammy Zhong

#include <stdio.h>

void square_num(int *n); // CHANGED
void swap(int n1, int n2);  

int main(void) {
    int num1 = 7;
    
    // printf("Num1 before square_num: %d\n", num1);

    // square_num(&num1); // CHANGED

    // printf("Num1 after square_num: %d\n", num1); // should print 49

    int num2 = 8;

    printf("Before swap: num1 = %d, num2 = %d\n", num1, num2);

    swap(num1, num2); // it's not we're giving the variable to the other function
    // it's actually we are copying over the value from these two variables into 
    // n1 and n2 in the function

    printf("After swap: num1 = %d, num2 = %d\n", num1, num2);


    return 0;
}

// // square the value of n
// void square_num(int *n) { // CHANGED n is a copy of what is in num1 in the main function
//     *n = *n * *n; //?
// }

// swap the values in the two given variables around
void swap(int num1, int num2) { 
    // TODO
    int temp = num1;
    num1 = num2;
    num2 = temp; 
}