Compilare: user.cpp: In function ‘int main()’: user.cpp:20: warning: array subscript has type ‘char’ user.cpp:24: warning: array subscript has type ‘char’ user.cpp:26: warning: array subscript has type ‘char’ user.cpp:29: warning: array subscript has type ‘char’ user.cpp:56: warning: array subscript has type ‘char’ user.cpp:58: warning: array subscript has type ‘char’ user.cpp: In function ‘bool an()’: user.cpp:128: warning: array subscript has type ‘char’ user.cpp:130: warning: array subscript has type ‘char’