#include <iostream>
#include <cstring>
using namespace std;
int main(){
char a[]="abcde";
if(a[5]=='\0')
cout<<"ok"<<endl;
for (int i = 0; i <6 ; ++i) {
cout<<a[i];
}
cout<<endl;
cout<<strlen(a)<<endl;
// strlen without including the terminating null character itself
return 0;
}