Help with making a function.

I am trying to create a function that takes a single number and determines if it is a square root or not. If it is a perfect square it takes the square root, and if not it divides by three and rounds down. How do i do that?

this is what I have:

function y = x^2;
if y=1;
    z = sqrt(y);
end
else
    y/3

Answer 1

[Akira Agata]

Like this? (Please save the following code as squareRootCheck.m)

function y = squareRootCheck(x)
if mod(sqrt(x),1) == 0
  y = sqrt(x);
else
  y = floor(x/3);
end
end

Answer 2

[Stephen23]

function y = myfun(x)
y = sqrt(x);
if y~=fix(y)
    y = floor(x/3);
end
end