How can I use the "cin" code to ask for a letter as an input?

Question

I'm playing with arrays and data types and am trying to create a simple code that will ask to enter a letter between a to e. Each letter chosen will print a certain word in return.

I'm not fully getting how to use data types and arrays.

Here's my currently dysfunctional code:

#include <iostream>
using namespace std;

int main ()

{
string letter[5]={"minor", "toddler", "child", "teenager", "adult"};
string L[5];

cout << "enter a letter between a to e\n\n";
cin >>L;

switch (L) {
case a:
cout <<letter[0];
break;
case b:
cout <<letter[1];
break;
case c:
cout <<letter[2];
break;
case d:
cout <<letter[3];
break;
case e:
cout <<letter[4];
break;

}

return 0;

}

Answer 1

I modified your code a bit, explanations are in the comments:
https://code.sololearn.com/cf0u96je2YjF/?ref=app

Answer 2

Thanks Shadow for a really fantastic answer. It was more than helpful!