obrnut string

#include <stdio.h>    /* stdin, printf, and fgets */
#include <string.h>   /* for all the new-fangled string functions */


int main()
{
    char string [30];
    char string2 [30];

    int i=0, k;


    printf("unesite prvi niz:\n");
    fgets(string, 15, stdin);
    k = strlen(string);
    printf("duzina majmuna je: %d\n", k);

    while (i<=15) {
        string2[k-1] = string[i];
        ++i;
        --k;

    }
    string2[k] = '\0';
    printf("obrnut niz je: %s", string2);


    return 0;
}