Exam CPP Topic 7 Question 79 Discussion

What happens when you attempt to compile and run the following code?
#include <string>
#include <list>
#include <iostream>
using namespace std;
template<class T> void print(T start, T end) {
while (start != end) {
std::cout << *start << " "; start++;
}
}
int main() {
string t1[] ={ "1", "2", "3", "4", "5", "6", "7", "8", "9", "10"};
list<string> l1(t1, t1 + 10);
list<string> l2(l1);
l2.reverse(); l1.splice(l1.end(),l2);
l1.unique();
print(l1.begin(), l1.end()); cout<<endl;
return 0;
}