How know error when matlab is failed down?

I compiled a .cpp file by mex function and it is compiled successfully but when run the code the matlab is crashed and ask me to stop and restart it.

This error was detected while a MEX-file was running. If the MEX-file
is not an official MathWorks function, please examine its source code
for errors. Please consult the External Interfaces Guide for information
on debugging MEX-files.

How can i know the error and any idea to expected where is error?

[James Tursa]

You have a bug in your C++ code. You need to post your code before we can help you. If the code is too large, try to boil it down to a small example that reproduces the problem and post that.

[Steven Lord]

Here are some instructions on how to troubleshoot MEX-files. [I don't know how much of this is release specific, so if you're using an older release you may want to search for the version of this documentation page in your installation's local documentation.]

Answer 1

[Mary Rokicki]

You have a bug in your C++ code. You need to post your code before we can help you. If the code is too large, try to boil it down to a small example that reproduces the problem and post that.

[samar mahmoud]

I have posted the code in error was detected while a MEX-file was running? and run the code many times and found the error in input pr[13] but cannot know what error. can anyone help me?