How do I let VB MATLAB know that an instance has been run, so that the user does not have to run it

It seems that MATLAB itself can't do this kind of checking, but you can only do it through the startup settings, you can search for "specifying startup options using the startup file for the matlab program, in Help, or there will be the information you want.

n=10;%% the length of the random sequence.

m=100;The number of groups for the random sequence.

base=zeros(m,n);% of the results of the storage matrix for i=1:m

base(i,:)=randint(1,n);

enddisp('The result is:')

disp(base) % output result base matrix.

n=100;% number of executions.

for i=0:n;

Commands that require loops;

That's it.

You can use the for loop statement, for example: for i=1:30;The corresponding statement is stopped 30 times.

MATLAB is a commercial mathematics software produced by Mathworks in the United States, which is a high-level technical computing language and interactive environment for algorithm development, data visualization, data analysis and numerical calculation, mainly including MATLAB and Simulink.

I don't know if there's an easier way, mine is to use fso to do when running the program, write a text file, write some values into it, at this time, if you open the second program, if you detect that the text file already exists, then a prompt pops up "The application has been opened".

When you close the program, you can close the text file along with it, you still don't understand what I mean, I mean, when you open a program exe, create a txt file, and write whatever you want into it.

At this time, if you open another exe, it will detect whether there is that txt, and if it exists, it means that the program has been opened. You get the idea?

An instance is a process.

APIs that use processes to exclusively each other

For example, lock(...)unlock(..Running one process locks another. Otherwise unlocked.

Set the program startup item to copy the sub main function

private sub form_load()if then

trueend if

end sub

private sub timer1_timer()static t as integer

if t >=5 then

endelse

clsprint "There is already a program for the brigade to run, counting down the wild bridge"&5 - t & seconds after exiting"

Song Zhenmeng t = t + 1

end if

end sub

<>Look at Zheng Xian, look at the conglomerate and the cherry blossoms.

With a loop. Example:

do you need to run.

This is an endless loop and is not recommended.

Here's how I've done it for years:

Put a timer control and set the time. Note: 1000 is 1 second to put the ** you need to run in the timer control.

In this way, you can run your ** (such as 1 second, or seconds, etc.) clock without intervals of 1 second, and that's what the clock does. . .

dodoevents 'If you want to perform other tasks in the process, use it to actively release resources.

if condition then exit sub'You must set a termination condition to exit the loop.

loop

Design an endless loop. Such as:

do while true

What you want to do**.

loop