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Software Design Using C++

Review of Loop Patterns

Answering the Question

Remember that we are trying to rewrite the test program so that the program now has the user interactively enter a list of items to buy. For each item to be purchased, the program should prompt the user to enter the unit price and the number of units of this item to buy. The program should output the cost for each type of item and, at the end, the total cost.

You selected the count-controlled loop plan, shown in outline below. This will not work as it requires us to know in advance how many items should be processed (purchased). According to the description above we are not given this count. Go back and try again.

int k;
Get the Count of how many data items should be processed;
for (k = 0; k < Count; k++)
   Read one data item into Item;

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