Thread: Setting a countdown timer in C++?

Hi everyone!
So, I'm trying to set a countdown timer with this code but everytime I run it I have to set the amount of seconds the countdown is going to go for. Instead of that I wanted to set the amount beforehand so when I run it the countdown would start automatically. Is there a way I can do that with this code?

Code:

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


using namespace std;




int main()
{
     int iCounter;


    scanf ("%d", &iCounter);


    while (iCounter !=0){
        printf ("\n\t%d", iCounter);
        iCounter --;
        sleep (1);
        system ("cls");
    } printf("\nCount down timer has expired\n");


    return 0;
}