Chapter 8, Problem 8.13E

(What Does This Code Do?) What does this program do?
1. // Ex. 8.13: ex08_13.cpp
2. // what does this program do?
3. #include <iostream>
4. using namespace std;
5.
6. void mystery1 (char*, const char*); // prototype
7.
Fig. 8.19 What does this program do? (Part 1 of 2.)
8. int main () {
9. char string1 [80];
10. char string2 [80];
11.
12. cout<< ”Enter two strings:” ;
13. cin >> string1 >> string2 ;
14. mystery1 (string1, string2);
15. cout<<string1<<endl;
16. }
17.
18. //what does this function do?
19. void mystery1(char* s1, const char* s2) {
20. while (*s1 != ‘\0’) {
21. ++s1;
22. }
23.
24. for (;(*s1 = *s2); ++s1; ++s2) {
25. ; // empty statement
26. }
27. }
Fig 8.19 What does this program do? (Part 2 of 2)