The program output is also shown below. #include #include using…

The program output is also shown below.

1. #include
2. #include
3. using namespace std;
4. char caesar(char);
5. int main()
6. {
7. string input;
8. do
9. {
10. cout
11. cout
12. getline(cin, input);
13. string output = “”;
14. for (int x = 0; x
15. {
16. output += caesar(input[x]);
17. }
18. cout
19. }
20. while (!input.length() == 0);
21. } //end main
23. char caesar(char c)
24. {
25. if (isalpha(c))
26. {
27. c = toupper(c); //use upper to keep from having to use two seperate for A..Z a..z
28. c = (((c – 65) + 13) % 26) + 65;
29. }
30. //if c isn’t alpha, just send it back.
31. return c;
32. }