IP地址

最新推荐文章于 2024-12-11 04:45:00 发布

原创最新推荐文章于 2024-12-11 04:45:00 发布 · 277 阅读

CC 4.0 BY-SA版权

#include <iostream>
using namespace std;
class IP
{
private:
    union
    {
        unsigned char seg[4];
        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 s0,int s1,int s2,int s3)
{
    seg[0]=s3;
    seg[1]=s2;
    seg[2]=s1;
    seg[3]=s0;
}

void IP::showIP()
{

    cout<<int(seg[3])<<"."<<int(seg[2])<<"."<<int(seg[1])<<"."<<int(seg[0])<<endl;
    return;
}

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(seg[3]<128)
        return 'A';
    else if(seg[3]<192)
        return 'B';
    else if(seg[3]<224)
        return 'C';
    else if(seg[3]<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;
}