Compilare: user.cpp: In function ‘int main()’: user.cpp:54:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(fr2[restr] == 0) ^ user.cpp:56:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(fr2[str[i]] > 0 && str[i] == restr) { ^ user.cpp:58:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] --fr2[str[i]]; ^ user.cpp:59:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] --fr1[str[i]]; ^ user.cpp:60:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] } else if(fr2[str[i]] > 0 && fr1[str[i]] > fr2[str[i]]) ^ user.cpp:60:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] } else if(fr2[str[i]] > 0 && fr1[str[i]] > fr2[str[i]]) ^ user.cpp:60:60: warning: array subscript has type ‘char’ [-Wchar-subscripts] } else if(fr2[str[i]] > 0 && fr1[str[i]] > fr2[str[i]]) ^ user.cpp:61:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] --fr1[str[i]]; ^ user.cpp:62:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(fr2[str[i]] > 0 && fr1[str[i]] == fr2[str[i]]) { ^ user.cpp:62:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(fr2[str[i]] > 0 && fr1[str[i]] == fr2[str[i]]) { ^ user.cpp:62:59: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(fr2[str[i]] > 0 && fr1[str[i]] == fr2[str[i]]) { ^ user.cpp:64:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr1[str[i]]--; ^ user.cpp:65:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr2[str[i]]--; ^