writing code in enum - c++

Question

I wrote a certain method on how to access my fields in a class, but my teacher told me I should use an enum.
How can I re-write this code to use an enum and not use gotos?
void SetType() {
cout << "Book SetType" << endl;
Choice: cout << "Please Select from the list: \n "
<< "1- Technical literature \n "
<< "2- Fiction literature \n "
<< "3- Textbook" << endl;
int i;
cin >> i;
switch (i) {
case 1:
Type = "Technical literature";
break;
case 2:
Type = "Fiction literature";
break;
case 3:
Type = "Textbook";
break;
default:
cout << "Erorr you entered a wrong choice" << endl;
goto Choice;
}
}

Answer 1

just use loops instead of gotos of it is going to be a spaghetti code.
Enums are fine to does not care about the numbers for the defines, because they are incremented automatically if you add a new one.
#include <iostream>
#include <string>
void SetType();
using namespace std;
string Type;
int main()
{
SetType();
cout << "so you choose " << Type << endl;
return 0;
}
enum select
{
Technical_literature = 1,
Fiction_literature,
Textbook
};
void SetType() {
cout<<"Book SetType"<<endl;
while(1)
{
cout<<"Please Select from the list: \n 1- Technical literature \n 2- Fiction literature \n 3- Textbook"<<endl;
int i;
cin >> i;
switch(i) {
case Technical_literature:
Type="Technical literature";
return;
case Fiction_literature:
Type="Fiction literature";
return;
case Textbook:
Type="Textbook";
return;
default:
cout << "Erorr you entered a wrong choice" << endl;
}
}
}

Answer 2

Your teacher meant that instead of hardcoding constants all over the place you need to declare your i as enum.
enum some_type {
type_techlit=1, type_fiction, type_textbook
};
some_type i;
And then read up on enums.