I am new to Matlab. Can anyone explain how I get this simple prog to run on my mac?

%Initialise array

a=[1 -3 2 5];
try
    %Try to display an element
    index = input('Enter subscript of element to display: ');
    disp[('a(int2str.(index))=(num2str.(a(index)')];
catch
    %If we get here an error occurred
    disp('Illegal subscript:int2str(index)');
end

Answer 1

[Thorsten]

a=[1 -3 2 5]; 
try %Try to display an element 
  index = input('Enter subscript of element to display: '); 
  disp(['a(index)= ' int2str(a(index))]); 
catch %If we get here an error occurred 
  disp(['Illegal subscript: ' int2str(index)]); 
end

Answer 2

[Robert Booth]

Thank you Thorsten. V helpful answer-I learned a lot Robert Booth