How to suppress command output?

Matlab version - 7.1.2.0 (R2011a)

Hear me out here, I know that to suppress output you put a semicolon at the end of a line. However even after adding the semicolon at the end of each line of my .m file Matlab is still displaying an output of the actual line itself.

Ex: If my code was:

disp('x');

my output would be:

disp('x');
x

anybody know what might be causing this?

EDIT: Alright to clarify here if I wanted to display 'x' and I used the disp command not only does 'x' print out to the console but 'disp('x');' prints to the console as well, what I don't want to see is the disp part that prints out, any ideas?

Image of problem:

Answer 1

[Image Analyst]

I bet you have somehow turned "echo" on. Try putting in this line:

echo off;

[Nick]

Thanks! I ran that through the console and it stopped it all. Now I'll have to see if I can get it to read out the name of the script I run when I click play from the script window.

[Image Analyst]

That is automatically put into the "mfilename" variable, which is in scope everywhere. Put a line in that says:

fprintf('The name of this m-file is %s\n', mfilename);

Answer 2

[Jan]

The semicolon suppresses the output of the the replied value of a command or an assignment. If you call a function, which writes to the command window, appending the semicolon does not suppress this.

Examples:

fprintf('hello\n')
fprintf('hello\n');
numOfChars = fprintf('hello\n')
numOfChars = fprintf('hello\n');

Answer 3

[Walter Roberson]

How are you invoking your function? I do not see any

testing

in your command window, which suggests to me that perhaps you selected something from the GUI or used one of the shortcut keys; in that case the disp() could be arising from that.

[Nick]

I've been running it from the script editor using the run button or F5.