Well written functions check inputs to make sure the input is valid. The function ErrorCheck takes three arguments:
If the input is anything other then this, throw the error message
'Cody demonstration error'
If the input is good, simply return 23.
Clarification: For b, with "a string" it seems you accept both string arrays and char arrays. For c, with "matrix" it seems you require a numeric array — this is different from MATLAB's definition of a "matrix".
Thank you David Verrelli. I have modified the problem description to try to reflect that.
Replace NaNs with the number that appears to its left in the row.
MATCH THE STRINGS (2 CHAR) very easy
Area of an equilateral triangle
Determine the square root
Rotate matrix by -90 degrees
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