Input validation is the process of ensuring that the user is providing valid input to a program. Input validation typically uses a while loop. For example, it ensures that a number is within a certain range of values.

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Increment and decrement operators
https://youtu.be/tTpiIAOyVKw

The While Loop
https://youtu.be/aw1nXLpog8U

Endless loops
https://youtu.be/MGVDTjxfUfM

Do-While Loop
https://youtu.be/qFl9FBB3RrI

Example of a do-while loop where the user is prompted to restart the program
https://youtu.be/qNSSkzmCgYg

For loop
https://youtu.be/r0fxnF0VWvw

Nested loop
https://youtu.be/FiywVkhF3D4

How do you determine which loop to use?
https://youtu.be/XJlGmvASgmU

Sentinel value
https://youtu.be/p0GHpcgg3yo

Input validation using loops
https://youtu.be/tXgO8ZNuJ4c

Break and Continue statements in a loop structure
https://youtu.be/gJqUwp62Ur0

Lists
https://youtu.be/_GqgDq1pSHI

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