Case-Based Critical Thinking Questions Case 1 - Horizon Cleaners
Horizon Cleaners is an organic dry cleaner for clothing. The price for dry cleaning a shirt is $3.00, the price for pants is $3.50, and the price for dresses is $4.00. All clothes can be either washed or dry cleaned. Dry cleaned clothes can be hung or folded, and folded items cost an additional $0.50 per item.
The interface provides a text box for the user to enter the number of shirts being laundered. You want to make sure a string typed in by the user can be converted to a number to be used in the calculation for the total. Which of the following statements is valid?
A) strIsOK = TryParse(txtShirts.Text, intShirts)
B) strIsOK = Integer.TryParse(intShirts, txtShirts.Text)
C) blnIsOK = Integer.TryParse(txtShirts.Text, intShirts)
D) blnIsOK = TryParse(txtShirts.Text, intShirts)

Question

Quizplus · Accepted Answer

Option C represents the correct syntax of the Integer.TryParse method, which attempts to convert the string value from the text box to an integer data type. The converted integer value is then assigned to the variable intShirts. The method returns a boolean value indicating whether the conversion was successful or not, which is stored in the variable blnIsOK for later use in the program. Options A, B, and D contain syntax errors or use incorrect method parameters.