Reversing a word?

[Bman900]

So here is my code:

#include <stdio.h>
#include <stdlib.h>

int main()
{
    char word1[6] = "hello";
    char word2[6];
    int i,k;
    i= strlen(word1)-1;
    k=0;
    while(i>=0){
    word2[k]=word1[i];
    i--;
    k++;
    }
    printf("%s", word2);

    return 0;
}

My output is: elloh_hello

Whats weird is that word2 is limited to 6 characters why is it showing me 12?

[Moschops]

The end of a C-Style character string is indicated with a zero value.

When you feed a C-Style character string to printf, it will print it until it comes to the end of the string. The end of the string is the first zero value. word1 has a zero value at the end of it; word2 does not. It seems that word1 sits right next to word2 in your memory, so when you printf word2, you're getting word1 as well.