Debug on Microsoft Windows Platforms

This example shows the general steps to debug yprime.c, found in your MATLAB^® fullfile(matlabroot,"extern","examples","mex") folder. Refer to your Microsoft^® documentation for specific information about using Visual Studio^®. For an example, see How can I debug a C MEX file on Microsoft Windows Platforms with Microsoft Visual Studio?

Make sure Visual Studio is your selected C compiler:

cc = mex.getCompilerConfigurations("C","Selected");
cc.Name

Compile the source MEX file with the -g option, which builds the file with debugging symbols included. For example:
```
copyfile(fullfile(matlabroot,"extern","examples","mex","yprime.c"),".","f")
mex -g yprime.c
```
Start Visual Studio. Do not exit your MATLAB session.
Get the MATLAB process ID pid. (since R2025a)
```
pid = matlabProcessID
```
Refer to your Visual Studio documentation for information about attaching the MATLAB process ID.
Refer to your Visual Studio documentation for setting breakpoints in code.
Open MATLAB and type:
```
yprime(1,1:4)
```
yprime.c is opened in the Visual Studio debugger at the first breakpoint.

If you select Debug > Continue, MATLAB displays:

ans =

    2.0000    8.9685    4.0000   -1.0947

See Also