Compilare: user.cpp: In function ‘int g(int, int)’: user.cpp:195:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void doit()’: user.cpp:210:9: warning: unused variable ‘coord_x’ [-Wunused-variable] int coord_x = ev.fi; ^ user.cpp:144:46: warning: unused variable ‘_NN’ [-Wunused-variable] #define re(II, NN) for (int II(0), _NN(NN); (II) < (NN); ++(II)) ^ user.cpp:205:3: note: in expansion of macro ‘re’ re (i, N + M) { ^