Compilare: main.cpp: In function 'int checkWinner(int)': main.cpp:29:21: warning: unused variable 'elem_column' [-Wunused-variable] 29 | int elem_lines, elem_column; | ^~~~~~~~~~~ main.cpp: In function 'int compute_game(int, int)': main.cpp:81:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for ( i = 0; i < answer_for_states.size(); i++ ) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: At global scope: main.cpp:117:19: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 117 | char* answer[] = {"invalid", "draw", "win", "lose"}; | ^~~~~~~~~ main.cpp:117:30: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 117 | char* answer[] = {"invalid", "draw", "win", "lose"}; | ^~~~~~ main.cpp:117:38: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 117 | char* answer[] = {"invalid", "draw", "win", "lose"}; | ^~~~~ main.cpp:117:45: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 117 | char* answer[] = {"invalid", "draw", "win", "lose"}; | ^~~~~~ main.cpp: In function 'int compute_game(int, int)': main.cpp:66:17: warning: control reaches end of non-void function [-Wreturn-type] 66 | vector<int> answer_for_states; | ^~~~~~~~~~~~~~~~~