Question

How would I convert an ip address into bytes in C++? Basically how do I parse the IP address? For example, if I have a string equal to 121.122.123.124.
I need to parse this such that byte1 = 121, byte2 = 122, byte3 = 123, byte4 = 124.

Answer 1

If the pattern is constant, number dot number dot etc, then use istringstream:

#include <sstream>
using namespace std;

int byte1, byte2, byte3, byte4;
char dot;
char *ipaddress = "121.122.123.124";
istringstream s(ipaddress);  // input stream that now contains the ip address string

s >> byte1 >> dot >> byte2 >> dot >> byte3 >> dot >> byte4 >> dot;