how to stop a string(letter) being entered into an integer? the outcome i want is a message saying "you cant enter that" how do i do that? eg the code i need thanks
I'd like to know more information.
Your question : your string input is numbers only? (means Number format - 0123456789)
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no what i mean is my program you have to enter 3 numbers and it will give you an outcome what i want is if someone enters a letter or symbol it to display an error message