ภาษา C แสดงเวลาถอยหลัง

Compiler MS Visual studio (VC++)

#include "stdafx.h"
#include <windows.h>

void wait(long msecs)
{
    Sleep(msecs);
}

void gotoxy(short x,short y)
{
    HANDLE hConsoleOutput;
    COORD Cursor_an_Pos = { x,y};
    hConsoleOutput = GetStdHandle(STD_OUTPUT_HANDLE);
    SetConsoleCursorPosition(hConsoleOutput , Cursor_an_Pos);
}

int main(int argc, char* argv[])
{
    for(int cnt=10;cnt>=0;cnt--){
        gotoxy(14,1);
        printf("%2d\n",cnt);

        wait(500);
    }

    return 0;
}