MATLAB: Does an “if does not contain operator” exist

function

I am trying to write a function where the input must be entered in radians. My idea was to make the function return if the input does not contain "pi". Is there a way to do this?

ex. if you wanted to enter 90 you have to enter pi/2

Thanks

Best Answer

Trust the users of your program:

d = input('Input angle in radians [0 <= x <= 2*pi]: ')

Then even "pi/2" is a valid answer.

Testing the input to contain the string 'pi' would be not sufficient: E.g. the string '32 pineappletrees' should not be accepted, but '3.14159265358979 / 2' should.

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Best Answer

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