FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The conditional IF-THEN or IF-THEN-ELSE control structure allows a program to follow alternative paths of execution. Iteration, or looping, gives computers much of their power. They can repeat a sequence of steps as often as necessary, and appropriate repetitions of quite simple steps can solve complex problems.

Detailed explanation-2: -LOOP statements let you execute a sequence of statements multiple times. There are three forms of LOOP statements: LOOP, WHILE-LOOP, and FOR-LOOP .