sieci1

    #include<arpa/inet.h>
    #include<string>
    #include<stdlib.h>
    using namespace std;

    int main(int argc, char * argv[]){

            string adres = argv[1];
            int mask;
            size_t pos = adres.find('/');
            string _mask = adres.substr(pos+1);
            mask = atoi(_mask.c_str());
            cout << "Maska " << mask << endl;

            in_addr IP;
            adres.erase(pos, adres.length() - pos);
            //IP.s_addr = inet_addr(adres.c_str());
            inet_aton(adres.c_str(), &IP );
            cout <<  "IP sieciowy porzadek bajtow" << hex << IP.s_addr << endl;

            in_addr ip;
            ip.s_addr = ntohl(IP.s_addr);
            cout << "IP hosta " << hex << ip.s_addr;
            cout << "  " << inet_ntoa(IP) << endl;

            long MASK = 0xffffffff;
            MASK <<= 32 - mask;
            cout << "mask " << hex << MASK << endl;

            long network = ip.s_addr & MASK;
            cout << "network " << network << endl;

            long broadcast = (ip.s_addr | (!MASK));
            cout << "broadcast " << hex << broadcast << endl;
            return 0;
    }