Task 2. 2.2 The main part of the program can use a FOR

Added on - Sep 2019

Trusted by 2+ million users,
1000+ happy students everyday
Showing pages 1 to 1 of 2 pages
Task 22.2 The main part of the program can use a FOR repetition structure.a) Explain why a FOR repetition structure was chosen instead of a WHILE repetitionstructure.Even though a check has been performed to make sure that the variable HowFar is greaterthan 1 there could be inputs that might cause the program to terminate unexpectedly(crash).Ans: For loop is used because we know the exactly how many times for loop have to execute.This is decided by HowFar value. Until the HowFar variable value will remain the greater thanMyLoop variable value the loop will continue to execute. Whereas while loop is used where wedo not know exactly how many times loop will execute.b) Provide an example of an input that might cause the program to terminate and describea method that could be used to prevent this.Ans:If user input a string value instead of number then it will cause program to abruptlyterminate execution. This problem could resolve by the one method that is validateInput()method. First of all we read user input in string format and pass it to validateInput() method.Here is the code describes the all functioning to validate the user input.1.String inputVar = null;2.do{a.System.out.println(“Enter number: “);intputVar = sc.next();b.If(validateInput( String inputVar)){break;}else{System.out.println(“Invalid input”);c.}3.}while(true);4.double HorFar = double.parseDouble(inputVar);5.public Boolean validateInput(String inputVar){6.try{ double no = double.parseDouble(inputVar);if(no < 1){ retrun false; }
Desklib Logo
You are reading a preview
Upload your documents to download or

Become a Desklib member to get access