Help converting array program to link list program

I have to below code that I came up with but instead of using an array I need to use a linked list. What I am trying to do is take linked list of letters a-i and reverse them in a new linked list. I had posted this on Dreamincode.net but they are having problems with the site. Can some one help me out here. I have been searching many different sites for the past few days trying to figure this out on my own and can't seem to figure it out.

Code:

#include <iostream>
using namespace std;
int main(){
    char a[9] = {'a','b','c','d','e','f','g','h','i'};
    
    for (int i=1;i<=9;i++){
        a[i-1];
        }
        cout<<"\n\n Here they are in reverse order:  \n";
        for (int i=8;i>=0;i--)
        cout<<a[i]<<endl;
        char c;
        cin>>c;
        }