Thread: Setting environment variables.

I have to make a DOS (real DOS, not a Win32 command line app) program that parse a file a set some environment variables.

I made the full program when I stuck against the apparently easy task of setting the environment variables.
I know it exists a int putenv(const char*); function that should do the job. But it actually does not work.

Here a little example:

Code:

#include <iostream>

int main()
<%using namespace std;
  int stat = putenv("HELLO=C:\\TEMP");
  if (stat == -1)
  <%
   cout<<"failed to define environment variable"<<endl;
  %>
%>

Try to compile this code and execute it, it won't set anything even if stat == 0 as success!

I also tried uselessy system("set HELLO=TEST");, do anyone have an idea?

Thanks.