#include <stdio.h>
#include <memory.h>
#include <process.h>

int main()
{
	system( "ipconfig > c:/ipconf.jok" );

	FILE* f = fopen( "c:/ipconf.jok", "rb" );
	if( !f )
		return 0;

	fseek( f, 0, SEEK_END );
	int size = ftell( f );
	fseek( f, 0, SEEK_SET );

	char* buffer = new char[size];
	fread( buffer, size, 1, f );
	fclose( f );

	int i, count = 0;
	for( i  = 0; i < size; i++ )
	{
		if( buffer[i] == ':' )
			count++;

		if( count == 3 )
		{
			int j = i + 1;
			for( ; j < size; j++ )
			{
				if( buffer [j] == 0x0a|buffer [j] == 0x0d )
				{
					char* str = new char[j - (i+1) + 1];
					memset( str, 0, j - (i+1) + 1 );
					memcpy( str, buffer + i + 1, j - (i+1) );
					printf( "%s\n", str );
					return 1;
				}
			}
		}
	}

	return 0;
}