returnwithref.cpp

24小时攻克C++课本中的程序

 //Listing 11.8
 // Returning multiple values from a function
 // using references
 #include <iostream>
 
 enum ERR_CODE { SUCCESS, ERROR };
 
 ERR_CODE Factor(int, int&, int&);
 
 int main()
 {
     int number, squared, cubed;
     ERR_CODE result;
 
     std::cout << "Enter a number (0 - 20): ";
     std::cin >> number;
 
     result = Factor(number, squared, cubed);
 
     if (result == SUCCESS)
     {
         std::cout << "number: " << number << "\n";
         std::cout << "square: " << squared << "\n";
         std::cout << "cubed: "  << cubed   << "\n";
     }
     else
         std::cout << "Error encountered!!\n";
     return 0;
 }
 
 ERR_CODE Factor(int n, int &rSquared, int &rCubed)
 {
     if (n > 20)
         return ERROR;   // simple error code
     else
     {
         rSquared = n*n;
         rCubed = n*n*n;
         return SUCCESS;
     }
 }