/in/foo.cc: In function 'int Numtri(int, int**, int**)':
/in/foo.cc:15:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'int Traceback(int, int, int**, std::ofstream&)':
/in/foo.cc:29:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^