use of strlen in c 2b 2b

1#include <iostream>
2#include <cstring>
3using namespace std;
4
5int main() {
6
7  // initialize C-string
8  char song[] = "We Will Rock You!";
9
10  // print the length of the song string
11  cout << strlen(song);
12
13  return 0;
14}
15
16// Output: 17