converts a point in cartesian to cylindrical and spherical cooridante​s(error:ge​tting same answer in cylindrical & spherical coordinates)

code:

function [Pcyl Psph] = cart2cylsph(Pcart)
% converts a point in cartesian to cylindrical and spherical cooridantes
% input and output as 3 by 1 vectors

x=Pcart(1);
y = Pcart(2);
z= Pcart(3);
rho= sqrt(x^2+y^2);
r = sqrt(x^2+y^2+z^2);
if x,y > 0
    phi = atan(y/x);
elseif x,y < 0
    phi = atan(y/x)+pi;
elseif x>0 && y<0
    phi = 2*pi-atan(y/x);
else 
    phi = pi-atan(y/x);
end
if z>0
    theta=atan(rho/z);
else
    theta= pi - atan(rho/z);
end
Pcyl= [rho phi z]';
Psph = [r theta phi]';
end

Answer 1

[dpb]

if x,y > 0
    phi = atan(y/x);
elseif x,y < 0
    phi = atan(y/x)+pi;
elseif x>0 && y<0

The if statements are bad syntax for the first two; they must be written in the same manner as the last...

if x>0 & y>0
    phi = atan(y/x);
elseif x<0 & y<0
    phi = atan(y/x)+pi;
elseif x>0 && y<0
    ...

I didn't read the rest of the function...