第6周-项目3-IP地址类

*All rights reserved.
*文件名称：main.cpp
*作    者：王艺霖
*完成日期：2016年4月5日
*版 本 号：v1.0
*
*问题描述：判断IP地址的类型是否属于同一子网

输入描述：无输入
*输出描述：IP地址的类型
*/
#include <iostream>
using namespace std;
class IP
{
private:
union
{
struct
{
unsigned char seg0;
unsigned char seg1;
unsigned char seg2;
unsigned char seg3;
};
unsigned int address;
};
public:
IP(int=0,int=0,int=0,int=0);
void showIP();
bool sameSubnet(const IP&ip,const IP&mark);
char whatKind();

};
IP::IP(int a0,int a1,int a2,int a3)
{
seg0=a0;
seg1=a1;
seg2=a2;
seg3=a3;
}
void IP::showIP()
{
cout<<int(seg0)<<'.'<<int(seg1)<<'.'<<int(seg2)<<'.'<<int(seg3)<<endl;
}
bool IP::sameSubnet(const IP&ip,const IP&mark)
{
unsigned int i1,i2;
i1=address&mark.address;
i2=ip.address&mark.address;
return (i1==i2);
}
char IP::whatKind()
{
if(seg0<128)
return 'A';
else if(seg0<192)
return 'B';
else if(seg0<224)
return 'C';
else if(seg0<240)
return 'D';
else
return 'E';
}
int main()
{
IP ip1(202,194,116,97), ip2(202,194,119,102), mark(255,255,248,0);
cout<<"ip1: ";
ip1.showIP();
cout<<"ip2: ";
ip2.showIP();
if(ip1.sameSubnet(ip2,mark))
cout<<"两个IP在同一子网"<<endl;
else
cout<<"两个IP不在同一子网"<<endl;
cout<<"ip1属于"<<ip1.whatKind()<<"类网络"<<endl;
return 0;
}