Financial Application: Calculate Tips
The code has been modified slightly and now uploaded to the site.

25.cpp
#include <iostream>
using namespace std;
int main(){
double subtotal;
double gratuity_rate;
double total;
std::cout << "Enter the subtotal and a gratuity rate: \n";
std::cin >> subtotal;
std::cin >> gratuity_rate;
gratuity_rate = (gratuity_rate / 100) * subtotal;
total = gratuity_rate + subtotal;
std::cout << "The gratuity is $" << gratuity_rate << " and total is $" << total;
}