While Loop

What is While Loop?

The while loop is a fundamental control flow structure (or loop statement) in programming, enabling the execution of a block of code repeatedly as long as a specified condition remains true. Unlike the for loop, which is tailored for iterating a fixed number of times, the while loop excels in scenarios where the number of iterations is uncertain or dependent on dynamic conditions.

While Loop Syntax:

The syntax of a while loop is straightforward:

while (condition){
    # Code to be executed while the condition is true
}

The loop continues to execute the block of code within the loop as long as the condition evaluates to true. Once the condition becomes false, the loop terminates, and program execution proceeds to the subsequent statement.

In this syntax:

condition is the expression or condition that is evaluated before each iteration. If the condition is true, the code block inside the loop is executed. If the condition is false initially, the code block is skipped, and the loop terminates immediately.
The code block inside the loop is indented and contains the statements to be executed repeatedly while the condition remains true.

How does While Loop work?

1.Condition Evaluation:

The while loop begins by evaluating a specified condition.
If the condition is true, the code block inside the while loop is executed. If the condition is false initially, the code block is skipped, and the loop terminates immediately without executing any code inside.

2.Block Execution:

If the condition evaluates to true, the code block inside the while loop is executed.
The statements within the code block are executed sequentially, just like in any other part of the program.

3.Condition Re-evaluation:

After executing the code block inside the loop, the condition is re-evaluated.
If the condition remains true, the loop iterates again, and the code block is executed again.
This process of evaluating the condition, executing the code block, and re-evaluating the condition continues until the condition becomes false.

Required things of while loop

Initial value // i= ;
Conditions // (i<=5)
Statment // operation / function
Value increment or decrement