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Software Design Using C++

Review of Functions and Parameters

Answering the Question

Your rewrite of the CalculateCost function was as follows. Then you chose Answer A, also shown below, for your rewrite of the Results function. This is incorrect since the updated value is not sent back in the TotalCost parameter (because it is not a reference parameter). Go back and try this part again.

float CalculateCost(float Price, int NumPurchased)
   float TempCost;

   TempCost = Price * NumPurchased;
   if (TempCost > 80.0)
      TempCost = TempCost - 5.0;

   return TempCost;

void Results(float Price, int NumPurchased, float TotalCost)
   float Cost;

   Cost = CalculateCost(Price, NumPurchased);
   TotalCost = TotalCost + Cost;
   cout << "Unit price: " << Price << "   Number purchased: "
      << NumPurchased << "   Cost: " << Cost << endl << endl;

You can go back to the overall review listing: Review of Introductory Topics.

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Author: Br. David Carlson with contributions by Br. Isidore Minerd
Last updated: January 15, 2013