Compilare: user.cpp: In function ‘int main()’: user.cpp:31:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] mu[sir[i]]=1; ^ user.cpp:32:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[sir[i]]++; ^ user.cpp:38:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(ap[c]>0) ^ user.cpp:79:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] g<<ap[c]<<'\n'; ^