How does While Loop work?
The while loop is a fundamental control flow structure in programming that allows a block of code to be executed repeatedly as long as a specified condition remains true. Let’s break down how a while loop works step by step:
- 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.
- 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.
- 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.
- Loop Termination:
- When the condition eventually evaluates to false, the loop terminates.
- Once the condition is false, the program flow moves to the next statement immediately following the while loop, skipping any code inside the loop.
While loop in Programming
While loop is a fundamental control flow structure in programming, enabling the execution of a block of code repeatedly as long as a specified condition remains true. While loop works by repeatedly executing a block of code as long as a specified condition remains true. It evaluates the condition before each iteration, executes the code block if the condition is true, and terminates when the condition becomes false. This mechanism allows for flexible iteration based on changing conditions within a program.
In this post, we will explore the while loop, its syntax, functionality, and applications across various programming domains.
Table of Content
- What is While Loop?
- While Loop Syntax
- How does While Loop work?
- While Loop in Different Programming Languages
- While loop in Python
- While loop in JavaScript
- While loop in Java
- While loop in C
- While loop in C++
- While loop in PHP
- While loop in C#
- Use Cases where While Loop is Used
- While Loop vs Other Loops
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