Function Example 3

#include <iostream>
#include <stdlib.h>

using namespace std;

int addTwoNumbers(int a, int b)
{
    int result = a + b;
    return result;
}

int addThreeNumbers(int addTwoNumbers(int a, int b), int c)
{
    int result = addTwoNumbers(a, b) + c;
    return result;
}

int main ()
{
    cout << result;
    return 0;
}