MATLAB: Calculating dot product of 2 3 dimensional row vectors

dotproduct

x=input('Enter the 1st pair of 3 vector elements in [square brackets]: ');
if (x~=3); 
    disp('The vectors elements cannot contain < or > 3 elements.');
else 
    y=input('Enter the 2nd pair of 3 vector elements in [square brackets]: ');
if  (y~=3);
   disp('The vectors cannot contain < or > 3 elements.');
else 
   z=dot(x,y);
   disp('The dot product of the entered vectors is: ');
   disp(z)
end
Hi,
I am a new user on MATLAB and trying to figure out what is wrong with the code. After the first line, the code does not respond. Any suggestions would be welcome.
Thank you.

Best Answer

I think this is what you want:
x=input('Enter the 1st pair of 3 vector elements in [square brackets]: ');
if (numel(x)~=3); 
    disp('The vectors elements cannot contain < or > 3 elements.');
else
    
    y=input('Enter the 2nd pair of 3 vector elements in [square brackets]: ');
    
    if  (numel(y)~=3);
       disp('The vectors cannot contain < or > 3 elements.');
    else 
       z=dot(x,y);
       disp('The dot product of the entered vectors is: ');
       disp(z)
    end
end
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