The while loop is used when you want to repeat a block of code as long as a condition remains true. Unlike the for loop, the while loop is best when you do not know in advance how many times the loop will run.
The loop continues running until the condition becomes false. Because of this, it is important to update the condition correctly to avoid infinite loops.
When to Use the while Loop
- When the number of repetitions is not known
- When waiting for a condition to change
- When reading data until a limit is reached
- When repeating tasks based on user input
- When building game logic or simulations
The while loop gives flexibility in handling repeated tasks.
In this example, the loop starts with count equal to 1 and runs as long as count is less than or equal to 5.
After each iteration, count increases by 1. This ensures the loop eventually stops.
This example represents a simple loop that continues until the correct password is entered.
In real applications, this logic is used in login systems and validation checks
This example shows how a while loop can be used to perform calculations while repeating code.
By learning the while loop, students gain the ability to handle dynamic repetition and build flexible logic for real-world programs.