Compilare: user.cpp: In function 'void bkt(char*, char, char, int, char, char*, int, int&)': user.cpp:29: warning: array subscript has type 'char' user.cpp:29: warning: array subscript has type 'char' user.cpp:30: warning: array subscript has type 'char' user.cpp:30: warning: array subscript has type 'char' user.cpp: In function 'int solve(int, char)': user.cpp:41: warning: array subscript has type 'char' user.cpp:50: warning: array subscript has type 'char' user.cpp:50: warning: array subscript has type 'char'