#include <stdio.h>
  #include <arpa/inet.h>

  int main(void) {
      struct in_addr addr;
      // "127.1" -> 127.0.0.1, "0177.1" -> 127.0.0.1, "1.0" -> 1.0.0.0
      if (inet_aton("127.1", &addr)) {
          printf("Resolved: %s\n", inet_ntoa(addr));
      }
      return 0;
  }