404.cpp

C++实训教程

//404.CPP  DEMO reference basic
#include <iostream.h>
main()
{
	int  a = 100;
	int & r1 = a;
	int & r2 = r1;
	r2 = 200;
	cout << a << "  "
		 << r1<< "  "
		 << r2<< "  " << endl;
	return 0;
}
/*
200  200  200
*/