How do I only show 1 output instead of all the outputs as a result of the matrix

I'm working a variation of this code and I don't understand how to supppress the output where I don't get all 6 elements every time I run the code. Basically, I just want to see the solution once and not various times in the command window (I just don't know what to add to do that). I've tried variations with display, fft (although I tried this, I am not familiar with the command), and some other commands that just made my solutions disapear. I'm completely stumped.

num=rand(3,2);
[row1,col1]=size(num);
for a=1:row1
    for b=1:col1
        disp('You chose an appropriate matrix')
    end 
end 

Any advice, or what video/resouce I shoud look at, is appreciated.

Answer 1

[Walter Roberson]

num = randi(10,3,2);
[row1,col1]=size(num);
foundit = false;
for a=1:row1
    for b=1:col1
        if num(a,b) == 7
          fprintf('You chose an appropriate matrix at (%d,%d)\n', a, b);
          foundit = true;
          break
        end
    end
    if foundit; break; end
end

You chose an appropriate matrix at (3,2)

if ~foundit
    fprintf('Better luck next time!\n');
end

[Danny Allen]

Thank you Walter.

I also just wanted to make sure of some things:

• Is the (%d,%d)\n just for formatting the solution, where it runs and shows the matrix is good at (2,1) for example
• Why do assign num(a,b) == 7

Also, if I wanted the solution to be a matrix, so the output would be a list of the rows and columns, could I also apply this with the true/false statement?

Sorry if these are pretty basic questions, but I find Matlab difficult and I'm just trying to understand more.

[Walter Roberson]

yes the %d is just formatting the output, which I did in order to emphasize that the solution could be found at any point in the matrix

if num(a,b) == 7

is not an assignment, it is a test. It is an arbitrary test as it is not clear what you want to do.

[Danny Allen]

Thank you that makes it much clearer! Thank you for your help!