// Decide which company to ship with for several packages  
	#include <iostream>
using namespace std;
	double calcSpeedy(int,char); // names of variables optional 
	double calcReliable(int wt, char overNite);
	void chooseShipper(double s, double r);
	
	int main()
	{ double speedy, reliable; // local, available only to main 
	  int pounds;  // used for weight of package 
	  char rush;   // 'Y' for overnight, 'N' if no rush 
	  cout<<"Send overnight? Y or N (Q to quit):";
	  cin>>rush;
	  while (rush != 'Q' && rush != 'q')
	  {  cout<<"Enter weight of package in pounds:";
	     cin>>pounds;
	     speedy = calcSpeedy(pounds,rush);
	     reliable = calcReliable(pounds,rush);
	     chooseShipper(speedy,reliable);
	     cout<<"Send overnight? Y or N (Q to quit):";
	     cin.ignore(100,'\n'); 
	     cin>>rush;
	  } // while 
	  return 0;
	 } // main 
	
	 double calcSpeedy(int wt, char overNite)
	 { // calculate cost to ship with Speedy 
	   if (overNite == 'Y' || overNite == 'y')
	   { if (wt <= 30) return 10.00;
	     else if (wt<=70) return 20.00;
	     else return 0.00;
	   } // overNite 
	   else return 0.50 * wt;
	 } // calcSpeedy 
	
	 double calcReliable(int wt, char overNite)
	 { // calculate cost to ship with Reliable 
	   if (overNite=='Y' || overNite=='y')
	     return 7.00 + 0.20 * wt;
	   else return 5.00 + 0.10 * wt;
	 } // calcReliable 
	
	 void chooseShipper(double s, double r)
	 // Print which shipper and cost.
	 // Remember that 0 for Speedy is not accepted! 
	 { if (s == 0 || r<s) //Speedy rejects or Reliable less
	      cout<<"Reliable: "<<r<<"\n";
	   else if (s == r) // Speedy and Reliable same cost 
	      cout<<"Either Speedy or Reliable: "<<r<<"\n";
	   else
	      cout<<"Speedy: "<<s<<"\n";
 } // chooseShipper