Which thread is suspended by SuspendThread()?

I have the following structure of code. Please tell which thread will be suspended by SuspendThread() and also is there a way to determine this in Visual Studio by using debugging.All three functions are in different files.

Res()
 {
      //code
 }
Run()
{
   HANDLE hThread = CreateThread();//to execute 'Res()' //in suspended mode
   while(condition)
    { 
         //code
         if(condition)
         {
             ResumeThread(hThread);
         }
         SuspendThread(hThread);
    }
   WaitForSingleObject(hThread);
}
int main()
 {
     Run();
      //code
 }