discountcalculator.cpp

C++大学简明教程,解压就行没有密码。希望对大家有用

// Exercise 9.16: DiscountCalculator.cpp
// Calculates the discount the user will receive
// based on how much the user spends.
#include <iostream> // required to perform C++ stream I/O

using namespace std; // for accessing C++ Standard Library members

// function main begins program execution
int main()
{
   // define variables
   int discountRate; // stores the discount rate
   int amount;       // stores amount that the user spends

   // prompt user for and enter the amount spent
   cout << "\nEnter amount spent: $";
   cin >> amount;

   // determine discount percentage
   switch ( amount / 50 )
   {
      case 0: // values in the range $0-49
         discountRate = 0;
         break;

      case 2: // values in the range $100-149
         discountRate = 10;
         break;

      default: // values $150 or greater
         discountRate = 15;

   } // end switch statement

   // display discount percentage
   cout << "\nYour discount is: " << discountRate << "%" << endl;

   cout << '\n';

   return 0; // indicate that program ended successfully

} // end function main


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