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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. #define LARGE_INFO_LENGTH 1024
  5.  
  6. enum tt__IPType { tt__IPv4, tt__IPv6 };
  7.  
  8. struct tt__IPAddress
  9. {
  10.   enum tt__IPType Type;   /* required element of type tt:IPType */
  11.   char *IPv4Address;  /* optional element of type tt:IPv4Address */
  12.   char *IPv6Address;  /* optional element of type tt:IPv6Address */
  13. };
  14.  
  15. struct tt__DNSInformation
  16. {
  17.   struct tt__IPAddress* DNSManual;
  18. };
  19.  
  20. int main()
  21. {
  22.   struct tt__DNSInformation* DNSInformation;
  23.   char dns_string[] = "192.168.2.254";
  24.  
  25.   DNSInformation = malloc(sizeof(struct tt__DNSInformation));
  26.   DNSInformation->DNSManual = malloc(sizeof(struct tt__IPAddress));
  27.   DNSInformation->DNSManual->IPv4Address = malloc(sizeof(char) * LARGE_INFO_LENGTH);
  28.   strncpy(DNSInformation->DNSManual->IPv4Address, dns_string, LARGE_INFO_LENGTH - 1);
  29.  
  30.   printf("%s\n", DNSInformation->DNSManual->IPv4Address);
  31.   return 0;
  32. }
Success #stdin #stdout 0s 2424KB
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192.168.2.254
https://ideone.com/6oH4Zc
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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