[v0.02] Add warning message. Hide the waiting message when CUDA initialization is done. Fix compiler warnings

src/common/main.cpp

@@ -49,6 +49,13 @@ int main(int argc, char* argv[]) {
     return EXIT_SUCCESS;
   }
 
+  set_log_level(true);
+
+  printWarn("gpufetch is in beta. The provided information may be incomplete or wrong.\n\
+           If you want to help to improve gpufetch, please compare the output of the program\n\
+           with a reliable source which you know is right (e.g, techpowerup.com) and report\n\
+           any inconsistencies to https://github.com/Dr-Noob/gpufetch/issues");
+
   struct gpu_info* gpu = get_gpu_info();
   if(gpu == NULL)
     return EXIT_FAILURE;