BanIP [C++]

// A utillity program that takes ip addresses from input and transforms them into a linux command to drop them from iptables.

#include <iostream>
#include <cstring>

using namespace std;

class ipAddress{
    private:
        char ip[20];
    public:
        ipAddress(){
            strcpy(this->ip, "127.0.0");
        }

        ipAddress(char * ip){
            strcpy(this->ip, ip);
        }

        const char * getIpAddress(){
            return this->ip;
        }

        const void setIp(const char * ip){
            strcpy(this->ip, ip);
        }
};

int main(void){
    int n;
    cin >> n;
    ipAddress ips[n];

    for(int i=0; i<n; i++){
        char tmp[20];
        cin >> tmp;
        ips[i].setIp(tmp);
    }

    for(int i=0; i<n; i++)
        cout << "iptables -A INPUT -s " << ips[i].getIpAddress() << " -j DROP\n";
}