pause-clc-fprintf-pause ... fprintf is ignored

My thinking was that this:

fprintf('Test %d',1)
pause

clc
fprintf('Test %d',2)
pause

should:

• Print "Test 1"
• Wait for the user to press a key
• Clear the Command Window and print "Test 2"
• Exit when the user presses a key

However, "Test 2" is never printed. Instead a blank screen is displayed. What am I missing?

I'm using MATLAB Online (R2019b)

[Daniel M]

I've had this happen to me before where a command immediately after a clc will print to screen, but then get cleared anyways. It's like MATLAB calls the clc function behind the scenes, runs the fprintf command, and then the clc actually executes.

I wonder if the issue will be solved if you add drawnow() after the clc. Let me know!

[Fangjun Jiang]

works as expected when I try it in R2019b.

[Paul Dostert]

Tried the drawnow() but no luck. It definitely works if the pause is replaced with an input(''), but I'm just curious why the original code doesn't work.

Perhaps you're correct and a clc executes after the next buffer flush?

[Paul Dostert]

Any chance you can try it in MATLAB Online just to verify it is having an issue on there?

[Navya Seelam]

Hi,

I have brought this issue to the notice of our developers. They will investigate the matter further.