#include <stdio.h>
#include <conio.h>
#include <dos.h>
void main()
{
   int i;
   clrscr();
   for (i=1 ; i<=80; i++) 
   {
				gotoxy(i, 1);
				putchar('*');
				gotoxy(i, 20);
				putchar('*');
	}
   for (i=2; i<20; i++) 
   {
				gotoxy(1, i);
				putchar('*');
				gotoxy(80, i);
				putchar('*');
	}
   for (i=70; i>5; i--)
   {
			gotoxy(i,10);
			printf("Hello ");
            delay(30);
	}
}

--------------------Configuration: Moveword - Win32 Debug--------------------
Compiling...
Moveword.c
C:\C\chap05\Moveword.c(8) : warning C4013: 'clrscr' undefined; assuming extern returning int
C:\C\chap05\Moveword.c(11) : warning C4013: 'gotoxy' undefined; assuming extern returning int
C:\C\chap05\Moveword.c(27) : warning C4013: 'delay' undefined; assuming extern returning int
Linking...
Moveword.obj : error LNK2001: unresolved external symbol _delay
Moveword.obj : error LNK2001: unresolved external symbol _gotoxy
Moveword.obj : error LNK2001: unresolved external symbol _clrscr
Debug/Moveword.exe : fatal error LNK1120: 3 unresolved externals
Error executing link.exe.
Moveword.exe - 4 error(s), 3 warning(s)