How do I test for integers in MATLAB?

Question

I\'m writing a program that will calculate factorials of integers. However, the part I\'m stuck on is if someone enters a non-integer such as 1.3, I\'d like to

Answer 1

You can use the mod function, which returns the remainder after division. All integers are divisible by 1. So a good test for non-integer would be

integerTest=~mod(value,1);

This returns 0 if value is not an integer and 1 if it is. You can then use this as a conditional to reject non-integer user inputs.