如何编程得到子网掩码和修改子网掩码

Question

用c语言

Answer 1

PIP_ADAPTER_INFO pAdapterInfo;
PIP_ADAPTER_INFO pAdapter = NULL;
DWORD dwRetVal = 0;pAdapterInfo = (IP_ADAPTER_INFO *) malloc( sizeof(IP_ADAPTER_INFO) );
ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO);// Make an initial call to GetAdaptersInfo to get
// the necessary size into the ulOutBufLen variable
if (GetAdaptersInfo( pAdapterInfo, &ulOutBufLen) == ERROR_BUFFER_OVERFLOW) {
  free(pAdapterInfo);
  pAdapterInfo = (IP_ADAPTER_INFO *) malloc (ulOutBufLen); 
}if ((dwRetVal = GetAdaptersInfo( pAdapterInfo, &ulOutBufLen)) == NO_ERROR) {
  pAdapter = pAdapterInfo;
  while (pAdapter) {
    printf("\tAdapter Name: \t%s\n", pAdapter->AdapterName);
    printf("\tAdapter Desc: \t%s\n", pAdapter->Description);
    printf("\tAdapter Addr: \t%ld\n", pAdapter->Address);
    printf("\tIP Address: \t%s\n", pAdapter->IpAddressList.IpAddress.String);
    printf("\tIP Mask: \t%s\n", pAdapter->IpAddressList.IpMask.String);    printf("\tGateway: \t%s\n", pAdapter->GatewayList.IpAddress.String);
    printf("\t***\n");
    if (pAdapter->DhcpEnabled) {
      printf("\tDHCP Enabled: Yes\n");
      printf("\t\tDHCP Server: \t%s\n", pAdapter->DhcpServer.IpAddress.String);
      printf("\tLease Obtained: %ld\n", pAdapter->LeaseObtained);
    }
    else
      printf("\tDHCP Enabled: No\n");
    
    if (pAdapter->HaveWins) {
      printf("\tHave Wins: Yes\n");
      printf("\t\tPrimary Wins Server: \t%s\n", pAdapter->PrimaryWinsServer.IpAddress.String);
      printf("\t\tSecondary Wins Server: \t%s\n", pAdapter->SecondaryWinsServer.IpAddress.String);
    }
    else
      printf("\tHave Wins: No\n");
    pAdapter = pAdapter->Next;
  }
}
else {
  printf("Call to GetAdaptersInfo failed.\n");
}

Answer 2

回复人：colcn88((散花)只想让家里人过得更好) ( ) 信誉：100 2006-03-09 14:28:00 得分:0
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linux下===================我晕，这是VC版，你怎么问linux的这是平台相关的，C函数库里没有相关函数