Compilare: user.cpp: In member function ‘const bool punct::este_vecin(const punct&) const’: user.cpp:21:48: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] (abs(double(this->y - a.y)) == 1) && (this->x == a.x)) ^ user.cpp: In function ‘void back_t(int, int, int)’: user.cpp:89:13: warning: unused variable ‘ok_now’ [-Wunused-variable] int ok_now = false; ^ user.cpp: In function ‘int main()’: user.cpp:142:14: warning: unused variable ‘needed’ [-Wunused-variable] int poz, needed = n; ^ user.cpp: In function ‘void read()’: user.cpp:50:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &n ,&m ,&k); ^ user.cpp:55:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^