Compilare: user.cpp: In function ‘void divide(double, double, int, pere)’: user.cpp:21:31: warning: statement has no effect [-Wunused-value] debug && cout << k << "\n"; ^ user.cpp:22:56: warning: statement has no effect [-Wunused-value] debug && cout << c.first << " " << c.second << "\n"; ^ user.cpp:29:36: warning: statement has no effect [-Wunused-value] debug && cout << "romb 1\n"; ^ user.cpp:33:36: warning: statement has no effect [-Wunused-value] debug && cout << "romb 2\n"; ^ user.cpp:37:36: warning: statement has no effect [-Wunused-value] debug && cout << "romb 3\n"; ^ user.cpp:41:36: warning: statement has no effect [-Wunused-value] debug && cout << "romb 4\n"; ^