Compilare: user.cpp: In function 'void bfs()': user.cpp:61: warning: array subscript has type 'char' user.cpp:61: warning: array subscript has type 'char' user.cpp:61: warning: array subscript has type 'char' user.cpp:63: warning: array subscript has type 'char' user.cpp:63: warning: array subscript has type 'char' user.cpp:63: warning: array subscript has type 'char' user.cpp: In function 'int main()': user.cpp:91: warning: array subscript has type 'char' user.cpp:91: warning: array subscript has type 'char' user.cpp:91: warning: array subscript has type 'char' user.cpp:92: warning: array subscript has type 'char' user.cpp:93: warning: array subscript has type 'char' user.cpp:94: warning: array subscript has type 'char'