Compilare: main.cpp: In function 'int checkWinner(int)': main.cpp:55:20: warning: suggest parentheses around comparison in operand of '==' [-Wparentheses] 55 | if ( mat[0][0] == mat[1][1] == mat[2][2] && mat[0][0] != 0 ) { | ~~~~~~~~~~^~~~~~~~~~~~ main.cpp:59:20: warning: suggest parentheses around comparison in operand of '==' [-Wparentheses] 59 | if ( mat[0][2] == mat[1][1] == mat[2][0] && mat[0][2] != 0 ) { | ~~~~~~~~~~^~~~~~~~~~~~ main.cpp: In function 'int compute_game(int, int)': main.cpp:92:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 92 | for ( i = 0; i < answer_for_states.size(); i++ ) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: At global scope: main.cpp:129:19: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 129 | char* answer[] = {"invalid", "draw", "win", "lose"}; | ^~~~~~~~~ main.cpp:129:30: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 129 | char* answer[] = {"invalid", "draw", "win", "lose"}; | ^~~~~~ main.cpp:129:38: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 129 | char* answer[] = {"invalid", "draw", "win", "lose"}; | ^~~~~ main.cpp:129:45: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 129 | char* answer[] = {"invalid", "draw", "win", "lose"}; | ^~~~~~