You can call the 'LoadLibrary' function from the Windows API and try to load a DLL that is part of the MCR.
The LoadLibrary function can be called with a string argument and it returns a handle/pointer greater than 0 if the library exists. It will return 0 if it failed to find the library.
See the following page more details about the function:
<http://msdn.microsoft.com/en-us/library/ms684175(VS.85).aspx>
You can include the following call to the LoadLibrary function in your C code to test if the MCR is installed:
LoadLibrary("mclmcrrt7x.dll");
where x is the minor version number of the MCR. You can find out the correct MCR version by running the MCRVERSION command in the MATLAB command window (in the same version of MATLAB in which you compiled your MATLAB code). The minor version number is the second return value of the MCRVERSION function; i.e. 'b' in the following MATLAB command-line:
[a b]=mcrversion
