Converting IP Address input by using inet_ntop() & inet_pton() (C PROGRAMMING)

Question

i'm trying to convert an IP address that's inputted by a user so that I can perform some bitwise operations on it and a address already stored in a structure. My problem is however that when the IP address is converted back the output is always 255.255.255.255. For example a input of 10.0.0.1 or 192.16.2.1 always returns 255.255.255.255. Any help would be appreciated. THANKS ``` { struct sockaddr_in sa; char ipinput[INET_ADDRSTRLEN]; fputs("Enter an IP Address: ", stdout); fflush(stdout); fgets(ipinput, sizeof ipinput, stdin); inet_pton(AF_INET, ipinput, &(sa.sin_addr)); inet_ntop(AF_INET, &(sa.sin_addr), ipinput, INET_ADDRSTRLEN); printf("IP Address = \%s\ 
", ipinput); } ```

Accepted Answer

You're not checking the value returned by `inet_pton`, you would have noticed it fails. As it turns out, it doesn't like the newline left in by `fgets`. Trim it:

```
ipinput[strlen(ipinput) - 1] = 0;
```

Converting IP Address input by using inet_ntop() & inet_pton() (C PROGRAMMING)

Solution

Problem