//Tip based on service
#include <iostream>
using namespace std;
int main(void) {
  double cost, tip;
  char service;
  cout<<"Enter cost of meal:$";
  cin>>cost;
  cout<<"Was the service good (Y/N)?";
  cin>>service;
  tip=(service=='Y' || service=='y')?cost*0.20:cost*0.15; 
  cout<<"The tip is $"<<tip<<"\n";
  system("pause");
} //main