FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -In most computer programming languages, a while loop is a control flow statement that allows code to be executed repeatedly based on a given Boolean condition. The while loop can be thought of as a repeating if statement.

Detailed explanation-2: -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-3: -The UNTIL clause indicates that the loop should execute repeatedly as long as the UNTIL expression evaluates to false (0). When the UNTIL expression evaluates to true (1), repetition of the loop stops, and program execution continues with the statement following the REPEAT statement.

Detailed explanation-4: -A do-while loop is referred to as an “exit controlled” loop since the looping condition (or predicate) is checked after the code block wrapped inside the do-while loop is executed once. In contrast, for-loop and while-loop are entry controlled loops.

Detailed explanation-5: -A “Do While” loop statement runs while a logical expression is true. This means that as long as your expression stays true, your program will keep on running. Once the expression is false, your program stops running. A “Do Until” loop statement runs until a logical statement is true.