1.cpp

是对类intset的编辑

#include<iostream>
using namespace std;
void exchange(int &,int &,int &);
int main()
{
	int a,b,c;
	cout<<"please give a, b, c"<<endl;
	cin>>a>>b>>c;
	cout<<endl;
	exchange(a,b,c);
	cout<<a<<endl<<b<<endl<<c<<endl;

}

void exchange (int &a, int &b, int &c)

{
	int d,e;
	d=b;e=c;
	b=a;c=d;a=e;
}