MATLAB: Function file not working correctly

Question

Hello, I am trying to get my function file to only show the information i need, however it shows an additional number that i know is from the first equation (x).

I only want the x,y,z variables to show on the command window.

My function file:

function [x,y,z] = func(rint,rext,g,e)
x=(2*(pi)*(rint)*500)+(2*(pi)*(rext)*500);
fprintf('x %0.1f\n',x);
V=(pi)*(((rext)^2)-((rint)^2))*500;
y=0.0015*V;
fprintf('y %0.1f\n',y);
z=(g*y*e)-(y)-(2000);
fprintf('z %0.1f\n',z);
end

My script file:

clear all
clc
rint=2.5;
rext=2.8;
e=5;
g=500;
disp(func(rint,rext,g,e));
----------------------------
My Command window:
x 16650.4
y 3.7
z 7362.1   1.6650e+04

I don't know what the last number is and i would like to know why it pops up so i can remove it.

Answer 1

Your code contains fprintf() statements, but you also disp() the result of the function call. The first output of your function is x, so after your function is run, x will be disp()'d. The 1.6650e+04 is the disp() of your x value of 16650.4