MATLAB: How can i convert the code to matlab 7

compatibilityconvert codematlab 7

Please do not close Questions that have an Answer.

fprintf('<matlab:plus(%d,%d) Sum>\n', a, b)

Note change from sum() to plus() -- unless, that is, you want "b" to be the dimension over which to sum the array "a"

This is because your function defines them as output arguments

   function [ang1 ang2 ang3 ] = triangle(s1,s2,s3)

MATLAB expects 3 outputs as defined by ang1,ang2 and ang3. Thats why you get the error.

If you don't want the outputs, just define the function as:

 function triangle(s1,s2,s3)