Chapter 6

Loops are needed in programming languages: a. to facilitate sequential processing of data b. to enable a variable to be analyzed for additional processing c. to process files stored on hard drives d. to allow statements to be repeated e. all of the above

To write a sentinel-controlled loop to compute the average temperature during the month of July in Florida, the best option for a sentinel value would be: a. 67 b. 1000 c. 100 d. "high temperature" e. none of the above

Which loop structure can only be used with a collection or array? a. foreach b. for c. while d. do ...while e. none of the above

If a loop body must be executed at least once, which loop structure would be the best option? a. foreach b. for c. while d. do ...while e. none of the above

If a loop body uses a numeric value that is incremented by three with each iteration through the loop until it reaches 1000 , which loop structure would probably be the best option? a. foreach b. for c. while d. do ...while e. none of the above

When used with a while statement, which jump statement causes execution to halt inside a loop body and immediately transfers control to the conditional expression? a. break b. goto c. return d. continue e. none of the above

pretest conditional expression that enables a loop to be executed as long as the counter variable is less than \(10 ?\) a. do while (c… # Which of the following is a valid C# pretest conditional expression that enables a loop to be executed as long as the counter variable is less than \(10 ?\) a. do while (counter \(<10\) ) b. while (counter \(<10\) ) c. foreach (counter in 10 ) d. none of the above e. all of the above

Which of the following represents a pretest loop? a. while b. do \(\ldots\) while c. for d. a and b e. a and \(c\)

If you intend to place a block of statements within a loop body, you must use ______ around the block. a. parentheses b. square brackets c. quotation marks d. curly braces e. none of the above

Write a for loop to display every third number beginning with 10 and continuing through 100.

Write a sentinel-controlled while loop that allows any number of temperatures to be entered. The average temperature should be calculated and displayed.

Create a loop body that generates random numbers between 25 and \(75 .\) Write a statecontrolled loop that adds all these randomly generated numbers until a value larger than 60 is generated. When the loop stops, display the number of acceptable generated values and the sum of those values.