Fixing error in program “Need Help”

I am getting this error with when I compile. I have to turn this assignment in a few hours. Here is the code:

error message(s)

untitled.cpp:34: error: invalid types ‘int[int]’ for array subscript
untitled.cpp:36: error: invalid types ‘int[int]’ for array subscript

// A basic Casear Cipher Encrytion Device.

include <iostream>

include <iomanip>

using namespace std;

define RINGLEN 62

1. // NUM OF CHARS IN ALLOWED CHARACTER SET.

int main () { int i=0; // index variables int j=0; char ring[RINGLEN+1]="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; int key = 4; const int size = 1000; char word[size+1];

1. cout << "Please insert the message you would like to encrypt: ";

2. cin >> word;
3.  
4. for (int i=0;i<size;i++)
5. {
6. if ((word[i] >='A' && word[i] <='Z') || (word[i]>='a'&&word[i]<='z') ||(word[i]>='0'&&word[i]<='9'))
7. {
8. int ring = word[i] + key;
9.  
10.  
11. for (int j=0; j<=RINGLEN;j++)
12. {
13. if (word[i] == ring[j])
14. {
15. cout << ring[(j+key) % RINGLEN];
16. break;
17. }
18. }
19. }
20.  
21.  
22. else
23. {
24. cout << word[i];
25.  
26. }
27. }
28. return 0;

}

Please help