Hardware Interaction C

#include
#include
#include
void main(void)
{
clrscr();
int x,y;
union REGS regs;
printf("
Enter the starting line of the cursor(0-4) - ");
scanf("%d",&x);
printf("
Enter the ending line of the cursor - ");
scanf("%d",&y);
gotoxy(40,12);
regs.h.ah = 1;
regs.h.ch = x;
regs.h.cl = y;
int86(0x10,®s,®s);
getch();
}