MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Overview. A do while loop is a control flow statement that executes a block of code at least once, and then repeatedly executes the block, or not, depending on a given boolean condition at the end of the block. Some languages may use a different naming convention for this type of loop.

Detailed explanation-2: -A “For” Loop is used to repeat a specific block of code a known number of times. For example, if we want to check the grade of every student in the class, we loop from 1 to that number. When the number of times is not known before hand, we use a “While” loop.

Detailed explanation-3: -Both for loop and while loop is used to execute the statements repeatedly while the program runs. The major difference between for loop and the while loop is that for loop is used when the number of iterations is known, whereas execution is done in the while loop until the statement in the program is proved wrong.

Detailed explanation-4: -Add a while loop to the flow chart. We use while because we don’t know how many names the user will enter during the flowchart runtime. Add loop statements.