Problems with "atof" from <cstring> library

[Wätzold Plaum <waetzold_plaum yahoo de>]

Hello,
 
 I've got a strange problem with gtkmm. In the following there are two little programms which are mainly the same, but just changed the position of "Gtk::Main kit(argc, argv);" The results are different. The first version does it right. The second not. Why?
 
 Best Regards,
 
 Wätzold
 
 
 =========== BEGIN ============
 
 
 #include <cstring>
 #include <gtkmm/main.h>
 #include <iostream>
 
 using namespace std;
 
 
 int main(int argc, char *argv[])
 {
   
     char cha[] = "0.5";
     double mass_;
     cout << "\nCha: " << cha << endl;
     mass_ = atof( cha );
     cout << "mass: " << mass_ << endl;
     
   Gtk::Main kit(argc, argv);
 
 
 
     //MainWindow mainwindow;
    
 //Gtk::Main::run(mainwindow); //Shows the window and returns when it is closed.
 
   return 0;
 }
 ======== END 1===========
 
 #include <cstring>
  #include <gtkmm/main.h>
  #include <iostream>
  
  using namespace std;
  
  
  int main(int argc, char *argv[])
  {
    
      
    Gtk::Main kit(argc, argv);
  
     char cha[] = "0.5";
       double mass_;
       cout << "\nCha: " << cha << endl;
       mass_ = atof( cha );
       cout << "mass: " << mass_ << endl;
     
  
  
      //MainWindow mainwindow;
      //Gtk::Main::run(mainwindow); //Shows the window and returns when it is closed.
  
    return 0;
  }
 ==========END 2===========

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