Extra-terrestrials problem

Question

Hi c++ developers, I'm solving Extra-terrestrials problem and I struggled with print the output with spaces in the for loop properly. Please explain to me how can I solve this(the problem is to print the input in the reverse order)
#include <iostream>
#include <cstring>

using namespace std;

int main() {
char word[100];
cin.getline(word,100);
for (int i=strlen(word); i>=0;i-- ){

cout<<word[i];
}
return 0;
}

Answer 1

Printing spaces is no issue, but you need to remember that arrays are null-indexed. This means you need to start iterating at

strlen( word ) - 1

because otherwise you print the null character stored after the string as well, which messes up the comparison between your output and the solution.

Answer 2

Usually the null character has no graphical represantation on a terminal at all, which is why it can be confusing if your output seemingly matches the solution, but does not appear to be correct.

Answer 3

Thank you for your reply.
So, the null character is a space?

Answer 4

Yes that's what confused me, but I get it. An Invisible place :D

Answer 5

Yor comments were helpful Thx.
And I just earned 10XP yay