Compilare: user.cpp: In function ‘void divide(double, double, int, pere)’: user.cpp:25:31: warning: statement has no effect [-Wunused-value] debug && cout << k << "\n"; ^ user.cpp:26:56: warning: statement has no effect [-Wunused-value] debug && cout << c.first << " " << c.second << "\n"; ^ user.cpp:32:36: warning: statement has no effect [-Wunused-value] debug && cout << "romb 1\n"; ^ user.cpp:36:36: warning: statement has no effect [-Wunused-value] debug && cout << "romb 2\n"; ^ user.cpp:40:36: warning: statement has no effect [-Wunused-value] debug && cout << "romb 3\n"; ^ user.cpp:44:36: warning: statement has no effect [-Wunused-value] debug && cout << "romb 4\n"; ^ user.cpp: In function ‘int main()’: user.cpp:65:34: warning: statement has no effect [-Wunused-value] debug && cout << "\n\n\n"; ^