// take N as an input and print the first N natural numbers//
#include<stdio.h>
int main()
{
    int n, num;

    printf("enter the number :");

    scanf("%d",&n);

    while(n!=0)
    {
        num=n%10;
        n=n/10;
    }

    printf("first digit=%d",num);

    return 0;
}