On the Extra Terrestrial problem on the code coach, my code output was the same as expected output still i failed the test cases

Question

#include <iostream>
using namespace std;

int main() {

string word;
string word_arr[20];
int length;

cin >> word;

length = word.length();

for(int i = length; i >= 0; i--){
cout << word[i];
}
return 0;
}

//please can someone tell me what went wrong?
//I'm meant to reproduce a given word in reverse
//thanks

Answer 1

Since a string works similar to an array, its last character is at the position
length() - 1
and not
length()
which you should keep in mind when initializing the running variable.

Answer 2

Oooh.... .Thanks
Ive done it... 😅😅

Answer 3

Can you tell me why the array size is 20?