#include<stdio.h>
#include<windows.h>
#include<time.h>
#define p printf
#define s scanf
#define g gotoxy

int main()
{
    int hours=0, minutes=0, seconds=0, h,m,s;
    g(2,2); p("Enter the time in HH:MM:SS :\n ");
    g(35,2); s("%d%d%d", &h,&m,&s);
    while(1)
    {
        p(" \r%d : %d : %d", hours,minutes,seconds);
        delay(1000);
        if(s!=0)
        {
            s--;
        }
        if(s==0&&m==0&&h!=0)
        {
            h--;
            m=59;
            s=59;
        }
        if(h==0&&m==0&&s==0)
        {
            exit(0);
        }
    }
}