How do I increment an IP address represented as a

Question

I have an IP address in char type Like char ip = "192.123.34.134" I want increment the last value (134). Does anyone how should i do it? I think, i should convert it to an integer, and then back, but unfortunately i don't know how? :( I'm using C++.

Please help me!

Thanks, kampi

Answer 1

This site ate my tabs, so I'll try again. I'm sure there is a library to do something like this, but this should work (assuming my syntax isn't messed up) enough to get the idea across.

Pseudo Code:

char[] ipAddress= "192.123.34.134";

if (ipAddress[ipAddress.Length-1] == '9')
{
    if(ipAddress[ipAddress.Length-2]=='9')
    {
        ipAddress[ipAddress.Length-1]='0';
        ipAddress[ipAddress.Length-2]='0';
        ipAddress[ipAddress.Length-3]=(char)ipAddress[ipAddress.Length-3]+1;
    }
    else
    {
        ipAddress[ipAddress.Length-2]=(char)ipAddress[ipAddress.Length-2]+1;
        ipAddress[ipAddress.Length-1]='0';
    }
}
else
{
     ipAddress[ipAddress.Length-1]=(char)ipAddress[ipAddress.Length-1]+1;
}