ch4-4.cpp

c++编写的关于课程管理系统的软件

#include <iostream.h>
void main()
{
   int a=1;
   int c=10;
   int &b = a;
   cout << a << ", " << b <<", " << c << endl;
   b = c;
   cout << a << ", " << b <<", " << c << endl;
   b = 20;
   cout << a << ", " << b <<", " << c << endl;
}