Compilare: user.cpp: In function ‘int factor()’: user.cpp:61:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(poz[x[i]] == 0) ^ user.cpp: In function ‘int main()’: user.cpp:77:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(poz[y] == 0) ^ user.cpp:78:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz[y] = 1; ^ user.cpp:80:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz[y] = 0; ^