//Please read first comment of code to get idea of what is the problem statement /* Got some feedback ? most welcome to make this code more better in terms of performance */ #include #include #include using namespace std; int main() { //input here string s = "10.0.3.193"; //string s = "167969729"; if(s.find(".")!=string::npos) { stringstream ss(s); string temp; string finalstr = ""; while(getline(ss,temp,'.')) { int num = stoi(temp); bitset<8> bset(num); cout << temp << "---->" << bset << endl; //finalstr += bset.to_string(); finalstr += bset.to_string(); } cout << endl << endl ; bitset<32> bsetfinal (finalstr); cout << "IP address " << s << " in decimal is " << bsetfinal.to_ulong() << endl; } else { long int a = stol(s); bitset<32> bsetfull(a); string finalstr = bsetfull.to_string(); string result; for(int i=0;i<32;i=i+8) { string temp = finalstr.substr(i,8); bitset<8> bset(temp); unsigned long int num = bset.to_ulong(); cout << temp << "---->" << num << endl; if (i!=0) result += "."; result += to_string(num); } cout << endl << endl ; cout << "Decimal " << s << " in IP address is " << result << endl; } return 0; }

challenge [ip-decimal-ip]