Compilare: user.cpp: In member function ‘bool Done::get_result(int, int)’: user.cpp:14:17: warning: variable ‘result’ set but not used [-Wunused-but-set-variable] int result; ^ user.cpp:16:9: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In member function ‘bool Done::palindrom(int, int)’: user.cpp:20:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a[x-1][y] == a[x+1][y]) ^ user.cpp:25:9: warning: control reaches end of non-void function [-Wreturn-type] } ^