ex6_6.cpp

纯粹是学习专用～

#include<iostream.h>
void swap(double *d1,double *d2){
double temp;
temp=*d1;*d1=*d2;*d2=temp;
}
void main(void){
double x,y;
cout<<"请输入x和y的值"<<'\n';
cin>>x>>y;
cout<<"x="<<x<<'\t'<<"y="<<y<<endl;
swap(&x,&y);
cout<<"x="<<x<<'\t'<<"y="<<y<<endl;
}