Compilare: user.cpp: In function ‘bool checkwin(char, bool)’: user.cpp:32:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] linie[0] += sum[ a[0][i] ] * sgn; ^ user.cpp:33:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] linie[1] += sum[ a[1][i] ] * sgn; ^ user.cpp:34:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] linie[2] += sum[ a[2][i] ]; ^ user.cpp:36:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] coloana[0] += sum[ a[i][0] ] * sgn; ^ user.cpp:37:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] coloana[1] += sum[ a[i][1] ] * sgn; ^ user.cpp:38:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] coloana[2] += sum[ a[i][2] ] * sgn; ^ user.cpp:55:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] s += (sum[ a[0][0] ] + sum[ a[1][1] ] + sum[ a[2][2] ])*sgn; ^ user.cpp:55:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] s += (sum[ a[0][0] ] + sum[ a[1][1] ] + sum[ a[2][2] ])*sgn; ^ user.cpp:55:55: warning: array subscript has type ‘char’ [-Wchar-subscripts] s += (sum[ a[0][0] ] + sum[ a[1][1] ] + sum[ a[2][2] ])*sgn; ^ user.cpp:62:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] s += (sum[ a[0][2] ] + sum[ a[1][1] ] + sum[ a[2][0] ])*sgn; ^ user.cpp:62:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] s += (sum[ a[0][2] ] + sum[ a[1][1] ] + sum[ a[2][0] ])*sgn; ^ user.cpp:62:55: warning: array subscript has type ‘char’ [-Wchar-subscripts] s += (sum[ a[0][2] ] + sum[ a[1][1] ] + sum[ a[2][0] ])*sgn; ^ user.cpp:68:24: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(nr >= 2 || nr == 1 && turn || (nr == 1 && nr1 > 0 && turn) ) ^