MATLAB: Can anyone find the error

input argument undefined

and after RUN

Best Answer

  • Perhaps you are calling the function with two few arguments, such as this on the command line:
    quadraticc(2)
    If you are simply hitting the "Run" button, then the program assumes no inputs at all, and b happens to be the first one it comes across.
    Neither of these are bugs in the code, simply incorrect usage. If you want to prevent this, define defaults:
    function quadraticc(a,b,c)
    arguments
    a (1,1) double = 1
    b (1,1) double = 0
    c (1,1) double = 0
    end