Compilare: user.cpp: In function ‘int termen()’: user.cpp:31:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] r=v[s[i]]; ^ user.cpp: In function ‘int main()’: user.cpp:64:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[x]=1-v[x]; ^ user.cpp:64:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[x]=1-v[x]; ^