Slides 13 - 19 Statements, Output Statements, Case Sensitivity, Program Structure. Exercise Review. Wrote C++ code for sum of two numbers algorithm. #include <iostream> using namespace std; int main () { int num1, num2, num3, avg; cout << “enter first number”; cin >> num1; cout << “enter second number”; cin >> num2; cout << “enter third number”; cin >> num3; avg = (num1+num2+num3)/3; cout << avg; }