While loop is also known as a pre-tested loop. In general, a while loop allows a part of the code to be executed multiple times depending upon a given boolean condition. It can be viewed as a repeating if statement. The while loop is mostly used in the case where the number of iterations is not known in advance

As explained earlier in the article, a while loop generally contains three sub-sections which are-

The condition which needs to be Evaluated: The code within these brackets is used to provide conditions that need to be evaluated. If this condition of evaluation gets satisfied, then the instructions of the code get executed. A typical example may be to check if the variable x is less than 10.

Instructions of Code: Here, we add those lines of code that need to be performed once the condition gets satisfied and the execution is inside the while loop. A typical example may be to print the value of the variable over which the loop is running.

Increment of the Value: In this section, simply value is incremented. The value of the variable which is incremented is the variable using which the loop is executing.

Let's see the simple program of while loop that prints table of 1 :

Program to print table for the given number using while loop in C :

A conditional expression is used to check the condition. The statements defined inside the while loop will repeatedly execute until the given condition fails.

The condition will be true if it returns 0. The condition will be false if it returns any non-zero number.

In the while loop, the condition expression is compulsory.

Running a while loop without a body is possible.

We can have more than one conditional expression in the while loop.

If the loop body contains only one statement, then the braces are optional.

The purpose of this blog post is to discuss some of the related topics, including while loop,how its work,its diagrams,its properties and its examples.

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