Compilare: user.cpp: In function ‘int main()’: user.cpp:57:27: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(poz1.second == 'D' && poz2.second == 'S' || poz2 < poz1) ^ user.cpp: In function ‘std::pair<int, char> get_poz(int)’: user.cpp:18:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘std::pair<int, int> get_coords()’: user.cpp:28:1: warning: control reaches end of non-void function [-Wreturn-type] } ^