How to Check if a String Is an Integer Using C++

Published: 20 January 2023
on channel: Max O'Didily

3,164

How to Check if a String Is an Integer Using C++

Greetings, in this C++ tutorial we shall be checking if a string is a valid integer. This validation will also allow for negative integers, for example -5 would be considered valid. 22 and 0 would also be considered valid. 2.2 and -4.20 would be invalid as they are not integers. This is great if you want to ensure your user inputs only an integer.

You can also remove the check for a - symbol if you only want the user to input a positive integer/whole number.

Thanks for watching this C++ integer validation tutorial.

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How to Check if a String Is an Integer Using C++

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