hour11_2.cpp

《24学时精通c++》的随书源码的下半部分。欢迎下载学习。

 //Listing 11.7
 // Returning multiple values from a function by using references instead of pointers 
#include <iostream>
  short Factor(int, int &, int &);  // note the & instead of the * in the original code
  int main() 
{
     int number, squared, cubed;
     short error;

     std::cout << "Enter a number (0 - 20): ";
     std::cin >> number;
 
     error = Factor(number, squared, cubed);

     if (!error)
     {
         std::cout << "number: " << number << "\n";
         std::cout << "square: " << squared << "\n";
         std::cout << "cubed: "  << cubed   << "\n";
     }
     else
         std::cout << "Error encountered!!\n";
     return 0;
 }

 short Factor(int n, int &pSquared, int &pCubed)   // note the & instead of the * in the original code 
{
     short Value = 0;
     if (n > 20)
         Value = 1;
     else
     {
         pSquared = n*n;     // this line also changed -- no dereference *
         pCubed = n*n*n;     // this line also changed -- no dereference *
         Value = 0;
     }
     return Value;
 }