Thread: Setting up the name of a file in the executable directory

I have to create a buffer to hold the the name of a license file which is in the executable directory. This is my klugy solution (I'm not a C programmer):

Code:

  char buffer[MAX_PATH] = "";
  GetModuleFileName(NULL, buffer, MAX_PATH);
  int len = (int) strlen(buffer);
  buffer[len-7] = '\0';
  strcat(buffer,"license.lic");

Note I know the name of the executable is net.exe - 7 chars, so I'm cheating.

Firstly is this code safe? I got a compiler warning about using strcat saying I should use strcat_s, but I couldn't get that working.

Secondly how do I get the correct length of the executable name?