this gcc-g++-3.3.1.tar.gz is a source file of gcc, you can learn more about gcc through this codes f

				public final class PR56 {				  public static void main(String[] args) {				    Object o = args;				    int[] a;				    if (!(o instanceof int[]) || (a = (int[])o).length != 2) {				    }				  }				}