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// Border.cmm - Draw a border of asterisks on the screen 
 
if defined(_WINDOWS_) 
   ScreenSize(30,30); 
 
DrawAsteriskBorder(); 
ScreenCursor(1,1); 
getch(); 
 
DrawAsteriskBorder() 
{ 
   size = ScreenSize(); 
   ScreenClear(); 
   // draw top border 
   ScreenCursor(0,0); 
   for ( col = 0; col < size.col; col++ ) 
      putchar('*'); 
   // draw bottom border 
   ScreenCursor(0,size.row-2); 
   for ( col = 0; col < size.col; col++ ) 
      putchar('*'); 
   // draw left and right borders 
   for ( row = 0; row < size.row - 1; row++ ) { 
      ScreenCursor(0,row); 
      putchar('*'); 
      ScreenCursor(size.col-1,row); 
      putchar('*'); 
   } 
}