Compilare: user.cpp: In function ‘int termen(int&)’: user.cpp:41:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] return var[A[d-1]]; ^ user.cpp: In function ‘int main()’: user.cpp:85:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] var[c]=!var[c]; ^ user.cpp:85:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] var[c]=!var[c]; ^ user.cpp: In function ‘int tot(int&)’: user.cpp:56:22: warning: ‘r’ may be used uninitialized in this function [-Wmaybe-uninitialized] return (r||tot(++d)); ^