Compilare: user.cpp: In function ‘void DFS(long long int, int)’: user.cpp:34:40: warning: ‘car’ may be used uninitialized in this function [-Wmaybe-uninitialized] int car_mask, l1, c1, l2, c2; char car; ^ user.cpp:54:53: warning: ‘c2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if( c1 < c2 ) output_file << car << "E" << c2 - c1 << "\n"; ^ user.cpp:52:53: warning: ‘l2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if( l1 < l2 ) output_file << car << "S" << l2 - l1 << "\n"; ^ user.cpp:54:53: warning: ‘c1’ may be used uninitialized in this function [-Wmaybe-uninitialized] if( c1 < c2 ) output_file << car << "E" << c2 - c1 << "\n"; ^ user.cpp:52:53: warning: ‘l1’ may be used uninitialized in this function [-Wmaybe-uninitialized] if( l1 < l2 ) output_file << car << "S" << l2 - l1 << "\n"; ^