Compilare: user.cpp: In function 'int main()': user.cpp:16: warning: array subscript has type 'char' user.cpp:18: warning: array subscript has type 'char' user.cpp:22: warning: array subscript has type 'char' user.cpp:25: warning: array subscript has type 'char' user.cpp:10: warning: unused variable 'coada' user.cpp:10: warning: 'b' may be used uninitialized in this function user.cpp:10: warning: 'a' may be used uninitialized in this function