MATLAB console output

Question

Say I had a variable called "x" and x=5.

I would like to do:

disp('x is equal to ' + x +'.'); 

and have that code print:

x is equal to 5.

This is how I am used to doing things in Java, so their must be a similar way to do this in MATLAB.

Thanks

Answer 1

If you want to use disp, you can construct the string to display like so:

disp(['x is equal to ',num2str(x),'.']) 

I personally prefer to use fprintf, which would use the following syntax (and gives me some control over formatting of the value of x)

fprintf('x is equal to %6.2f.\n',x); 

You can, of course, also supply x as string, and get the same output as disp (give or take a few line breaks).

fprintf('x is equal to %s\n',num2str(x)) 

Answer 2

printing out a few scalar variables in matlab is a mess (see answer above). having a function like this in your search path helps:

function echo(varargin) str = ''; for k=1:length(varargin)     str = [str ' ' num2str(varargin{k})]; end  disp(str)