URGENTTT HELP IN C++ ERROR: too many characters in character constant

[Dinorah]

I have a question,
I need to know if it is possible to do a switch case using a string

What I did is the following:

string *item_name = x.substr(i,x.size()-1);

item_names = new char [item_name.size() +1];
item_names[item_name.size()] = 0;
memcpy(item_names, item_name.c_str(), item_name.size());

It gives me an error in the case
ERROR: too many characters in character constant

What it could be?

[Athar]

You can only use switch with integral types, so that won't work.
And string literals are enclosed with double quotes. Single quotes are for single characters.