Compilare: user.cpp: In function ‘void intersc_min()’: user.cpp:23:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr2[s[i]]++; ^ user.cpp:38:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr2[sav]++; ^ user.cpp: In function ‘void make_minim()’: user.cpp:49:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (fr2[A[i]]>0) ^ user.cpp:52:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr2[A[i]]--; ^ user.cpp: In function ‘void intersc_max()’: user.cpp:86:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr[s[i]]++; ^ user.cpp:101:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr[sav]++; ^ user.cpp: In function ‘void make_maxim()’: user.cpp:112:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (fr[A[i]]>0) ^ user.cpp:115:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr[A[i]]--; ^ user.cpp: In function ‘int main()’: user.cpp:143:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr2[s[i]]++,fr[s[i]]++; ^ user.cpp:143:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr2[s[i]]++,fr[s[i]]++; ^