% script26.m
%  find the errors in this script
%    original script
% script26.m
%  find the errors in this script
%
A=[ 1 2 3 4;
dsp(num2str(A));
b=a^2;
disp('the values of b are ' b)
c=2 a;
x=2*y+10;
disp(num2str(A(5)));

%  corrected script
%
A=[ 1 2 3 4;  %  missing closing bracket
%(corrected)   A=[ 1 2 3 4];
dsp(num2str(A));  %  disp is mis-spelled
%(corrected)   disp(num2str(A));
b=a^2;            % variable a is not defined. MATLAB is case sensitive
%(corrected)  b = A^2;
disp('the values of b are ' b)  % disp() needs a single string, use concatenation
%                                  b is not defined; needs to be a string
%(corrected) disp(['the values of b are ' num2str(b)])
c=2 a;   %  missing arithmetic operator
%(corrected)  c=2-a;
x=2*y+10;   %  variable y is not defined
%(corrected)  x=2*A+10;  (or some other expression with a known variable; or define y
disp(num2str(A(5)));   % variable A has only 4 values, A(5) is not defined
%(corrected)  disp(num2str(A(3)));