A while loop is a statement or code that executes repeatedly based on a given condition. The while loop checks the condition before the block is executed. Similar to an if statement, the condition is assessed to see if the condition is true, and if so, the code within the block will execute, and the process will repeat until the condition becomes false. The while loop is useful when we want to perform one task as long as the condition remains true. Let's take a look at how to write a while loop in the following sections.

The while statement is followed by the condition defined within parentheses—( condition ).