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Question #1

Suppose that for a program that you are writing, you need to validate the user’s input and repeat the prompt if the user inputs an invalid response. In this case would a while loop or a do while loop be more appropriate?

A: for B: do while C: while D: if then E: None of these

Question #2

Suppose that for a program that you are writing, you need to validate the user’s input and repeat the prompt if the user inputs an invalid response. In this case would a while loop or a do while loop be more appropriate? Justify your answer.

Question #3

How many times will the loop below iterate?

j = 0;
while (j < 50)
{
cout « “Hello \n”;
cout « “World \n”;
}

A: 51 B: 50 C: 0 D: infinitely E: None of these

Question #4

How many times will the loop below iterate?

j = 25;
while ( j<=100 || j>=25)
(
cout <<“Temp variable =“ << j << endl;
j = j + 3;
}

A: 100 B: 75 C: 0 D: infinitely E: None of these

Question #5

Write a while loop that will print out all the numbers between 3 and 100 that are multiples of three.

Question #6

Identify the errors in the code below.

j = 155
while (!done)
{
if (j <= 25)
done = TRUE;
j = j — 5;
};

A: there should be a semicolon at the end of the first line B: It should be j >= 25 C: there shouldn't be a bracket at the end of the last brace D: all the above E: None of these

Question #7

Write a program that will prompt the user to enter an integer. The program should square the number and print back out the squared number. Repeat this process until 0 is entered as input.