Sinclair ZX80 / ZX81 / Z88 Forums

I am writing a simple program where the user is asked to input the integers 1 or 2.

To catch the error of them putting in a different integer I put in a line: If X <> 1 or X etc

But I’ve noticed that if I input another key that isn’t an integer the program ends. Terminates at the Input X line.

How do I catch this error?

You can use INKEY$.

I suggest using either a string with INPUT or better yet, program your own input routine using INKEY$.

For example: (Choice using INKEY$)

Mark

Inkeys sounds like it will be ideal, thanks!