cpp_primer_plus/ch02/04.cpp

# include <iostream>
using namespace std;

int main(){
	int yr_value, mn_value;
	cout << "Enter Your Eage" << endl;
	cin >> yr_value;
	mn_value = 12 * yr_value;
	cout << "It contains " << mn_value << " Months"<< endl; 
	return 0;
}