Latte no sugar

while(countdown>=0){

system("cls");                  //the instruction  "cls"  is used by screen clear.

printf("\atimer surplus:%d",countdown--);

_sleep(700);    //in parentheses num  is frequency of time   e.g. : _sleep(1000) implies one second as a unit

I browse on the website ,and there is a distinctive code that i had never seen before.

By the way , my C is very very poor.

I figure that is a long way to give a firm stand by myself in IT.

And I think I can do that as much as well.