#include <iostream>
#include <string.h>

// 2. ZD
int fact(int n) {
    if( n == 1 || n == 0 )
        return 1;

    return ( n * fact(n - 1));
}

// 3. ZD
int rikverc(char *s) {
    int duljinaS = strlen(s);
    char s2[strlen(s)];
    for(int i = duljinaS - 1, j = 0; i >= 0; i--, j++)
        s2[j] = s[i];
    printf("\n");
    printf(s2);
    printf("\n");
    return strlen(s);
}

int main() {
    printf("%d",fact(5));
    printf("Broj znakova iznosi: %d",rikverc("hello"));

    return 0;
}