Software Design Using C++
Review of Functions and Parameters
Answering the Question
Your rewrite of the CalculateCost function was as follows. Choose from the list below of
possible answers for a correct and compatible rewrite of the Results function.
float CalculateCost(float Price, int NumPurchased)
{
float TempCost;
TempCost = Price * NumPurchased;
if (TempCost > 80.0)
TempCost = TempCost - 5.0;
return TempCost;
}
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- Answer A
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;
}
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- Answer B
void Results(float Price, int NumPurchased, float TotalCost)
{
float Cost;
CalculateCost(Price, NumPurchased, Cost);
TotalCost = TotalCost + Cost;
cout << "Unit price: " << Price << " Number purchased: "
<< NumPurchased << " Cost: " << Cost << endl << endl;
}
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- Answer C
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;
}
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- Answer D
void Results(float Price, int NumPurchased, float & TotalCost)
{
float Cost;
CalculateCost(Price, NumPurchased, Cost);
TotalCost = TotalCost + Cost;
cout << "Unit price: " << Price << " Number purchased: "
<< NumPurchased << " Cost: " << Cost << endl << endl;
}
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