n// write a function FourPictures that first clear the GW
n// then display four pictures of size 150 so that they fill the
window
nVoid UserPicture()
{
n ClearDrawing();
n Picture(0, 0, 150);
n Picture(?, ?, 150);
n Picture(?,
?, 150);
n Picture(?,
?, 150);
n}
n