How do you validate that a string is a valid IPv4 address in C++?

Question

I don\'t need to validate that the IP address is reachable or anything like that. I just want to validate that the string is in dotted-quad (xxx.xxx.xxx.xxx) IPv4 format, w

Answer 1

If you don't want the overhead of Boost or TR1 you could search for the dots and check if the characters between them are numbers from 0 to 255.