#include void birthday(int&); // returns nothing, takes an integer as a parameter int main() { int x=0; // create a variable to store the age cout << "Hey Oldy, how old are you? "; cin >> x; // ask the user their age birthday(x); // give them a birthday cout << "You are a ripe age of " << x << "." << endl; // print out their age return 0; } void birthday(int& age) { age++; cout << "La la la la Happy Birthday" << endl; cout << "chomp chomp" << endl; cout << "cut cut" << endl; cout << "open presents..hey what is this??! I didn't want this!\n"; }