C / C++ / MFC

includeh10 wrote:

go to www.whatismyipaddress.com to see it at once.

MIB_IPADDRTABLE  *pIPAddrTable = NULL;
DWORD            dwSize = 0;
DWORD            dwRetVal = 0;
	
if (GetIpAddrTable(pIPAddrTable, &dwSize, 0) != ERROR_INSUFFICIENT_BUFFER )
{
	printf( "Error getting buffer size." );
}
else
{
	pIPAddrTable = ( MIB_IPADDRTABLE * ) malloc ( dwSize );
	
	if ( (dwRetVal = GetIpAddrTable( pIPAddrTable, & dwSize, 0 ) ) != NO_ERROR )
	{
		printf("GetIpAddrTable failed.\n");
	}
	
	for( int i = 0; i < pIPAddrTable->dwNumEntries; i ++ )
	{
		in_addr add;
		in_addr subnet;
	
		ZeroMemory( & add, sizeof( in_addr ) );
		ZeroMemory( & subnet, sizeof( in_addr ) );
		add.S_un.S_addr = pIPAddrTable->table[ i ].dwAddr;
		subnet.S_un.S_addr = pIPAddrTable->table[i].dwMask;
	
		printf("IP Address:         %s\n", inet_ntoa( add ) );
		printf("IP Mask:            %s\n\n", inet_ntoa( subnet ) );
	}
	
	free( pIPAddrTable );
}

        CString                 sLocalIp;<br />
	HOSTENT			*hs			= NULL;<br />
	UCHAR			ch[4]		= {0};<br />
	CHAR			szHostName[50]={0};<br />
<br />
	// get name of machine<br />
	if ( SOCKET_ERROR == ::gethostname((LPSTR)(LPCTSTR)szHostName, 50) )<br />
	{<br />
		return GetLastError();<br />
	}<br />
<br />
<br />
	hs = gethostbyname((LPSTR)(LPCTSTR)szHostName); <br />
<br />
	if ( hs == NULL )<br />
	{<br />
		return GetLastError();<br />
	}<br />
<br />
<br />
	// h_addr contains ip address<br />
	memcpy(ch, hs->h_addr,4); <br />
<br />
	// form string		<br />
	sLocalIp.Format("%d.%d.%d.%d", ch[0], ch[1], ch[2], ch[3]); 

mehrdadov wrote:

I want to get my Computer IP.How can I do it?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

namespace
{
	int a; // a is local to this translation unit.
}

jblau wrote:

It was my understanding from the stuff I read that you should always have a DELETE for every NEW that you use.