USING FUNCTIONS

Consider the following C++ code to perform the following subtraction:

9 - 6:

**#include <iostream>**

**using namespace std;**

**int main() {**

**int total = 0;**

**cout << "This code performs the following math operation: 9 - 6 = ";**

**total = sub(6,9);**

**cout << total;**

**}**

``

**int sub(int num1, int num2) {**

**return (num2 - num1);**

**}**

Is there anything wrong with the code?