Compilare: user.cpp: In function ‘int main()’: user.cpp:14:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] {f[s[i]]++; ^ user.cpp:15:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[i]=f[s[i]];} ^ user.cpp:19:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] int maxi=f[s[0]];int mini=f[s[0]],S=0; ^ user.cpp:19:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] int maxi=f[s[0]];int mini=f[s[0]],S=0; ^ user.cpp:22:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(f[s[i]]>maxi)maxi=f[s[i]]; ^ user.cpp:22:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(f[s[i]]>maxi)maxi=f[s[i]]; ^ user.cpp:23:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(f[s[i]]<mini)mini=f[s[i]]; ^ user.cpp:23:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(f[s[i]]<mini)mini=f[s[i]]; ^