Does anyone know what is the input argument in line 3 mean?

it is a functional file, and I tried to run it, but it told me there is a error in line3. Someone plz helps me...TY!

[James Tursa]

In the future, never post screenshots of your code. We can't run screenshots at our end, so we would be forced to retype your code in line-by-line in order to test run it. Please post your code as text, then highlight it and push the "{ } Code" button to format it.

Answer 1

[James Tursa]

You probably pushed the green triangle "run" button in the editor, or you entered "myiftest" at the command line without giving any arguments. In both cases, x will be undefined and you will get the error. You need to give an argument, e.g.,

myiftest(2.5)

[CodeElinesa]

okok I got it!everything works well now.Thank you so much!c: