Return control form a function to the main program
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So I have a function (say xyz.m) with inputs and outputs (integers and strings). I specify an 'if' condition, and if it not satisfied, then I want my program to discontinue executing any more lines from the function (xyz.m) and return the control to the very next line of my main program (let us call the main function as main.m). I tried using the syntax 'return' but it gives me an error because the variables that were supposed to be returned/filled by the function are not assigned (like this: ??? Output argument variable (and maybe others) not assigned during call <function.). So is there any other sytanx or command that does the job (something as simple as 'break' which simply quits the 'for' or 'while' loop). Thanks in advance.
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Accepted Answer
Matt Fig
on 13 Jun 2011
Define default output variables before the return statement.
function x = myx(A)
if A/2 > 7
x = [];
return
else
x = A+3;
end
More Answers (1)
Fangjun Jiang
on 13 Jun 2011
Even if such command or function exists, you still have the problem that the return variables of your xyz.m have not been set yet. xyz.m may have multiple return variables such [x, y,z]=function xyz. A good practice is to initialize or set the default value for x, y and z at the begining of your xyz.m so you won't have that problem.
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