ex6_1.cpp

纯粹是学习专用～

#include <iostream.h> 

void main(){
	int age1=18,age2=20,*p_age;
	p_age=&age1;    //情况1，见图6.1
	cout<<"age of wang ping is"<<*p_age<<endl;
	p_age=&age2;  //情况2，指针改指另一变量，见图6.1
	cout<<"age of zhang ling is"<<*p_age<<endl;
}