error: Too many output arguments

my goal is to obtain a matrix A (2x2) using a function called somma:

function [] =somma (x,y)
z=x+y

my script code is :

clear all
clc
x=1:2;
 y=3:4;
 A=zeros(length(x),length(y));
  [x1,x2]=meshgrid(x,y);
       for i=1:length(x);
    for j=1:length(y);
                A(i,j)=somma(x1(i,j),x2(i,j));
            end
end
A

the error reported is:

Error using somma

    Too many output arguments.

    Error in untitled5 (line 9)
                    A(i,j)=somma(x1,x2);

Answer 1

[Image Analyst]

You forgot to have somma return any value! Have it return z and it will work:

clc
x=1:2;
y=3:4;
A=zeros(length(x),length(y));
[x1,x2]=meshgrid(x,y)
for i = 1 : length(x)
  for j = 1 : length(y)
    A(i,j) = somma(x1(i,j), x2(i,j));
  end
end
A

function [z] =somma (x,y)
z = x + y
end

[Marco Barbarossa]

now my script code is:

clear all
clc
x=1:2;
 y=3:4;
 A=zeros(length(x),length(y));
  [x1,x2]=meshgrid(x,y);
  for i=1:length(x)
      for j=1:length(y)
                A(i,j)=somma(x1(i,j),x2(i,j))
      end
  end

    A

function [z] =somma (x,y)
z = x + y
end

my function code is:

function [z]=somma(x,y)
z=x+y;
end

errore reported :

Error: File: untitled5.m Line: 15 Column: 1
Function definitions are not permitted in this
context.

[Walter Roberson]

Store the code for the function in a separate file. Having a function in a script file requires R2016b or later.

Answer 2

[ahmed nebli]

when writing the for loop it dosen't end with a ; and next the second for loop need to be under the first for loop and decaled by one tab, see syntax in this example https://www.mathworks.com/help/matlab/ref/for.html

[Marco Barbarossa]

same error message with this code:

clear all
  clc
  x=1:2;
   y=3:4;
   A=zeros(length(x),length(y));
    [x1,x2]=meshgrid(x,y);
    for i=1:length(x)
        for j=1:length(y)
                  A(i,j)=somma(x1(i,j),x2(i,j));
        end
    end

      A

Answer 3

[Marco Barbarossa]

thanks to all! Walter Roberson is right !

[Image Analyst]

Or, better if you can, upgrade your release to the latest version.