How to convert IP to hex using C++ ?

[headshot]

Hi guy .
I don`t known how to convert IP to hex .
In this link http://www.mustat.com/70.42.23.121 (Ip host codeguru.com) . I see hex IP : Hex IP 0x462a1779
I want to convert IP "70.42.23.121" to "0x462a1779"

#include <winsock.h>
#include <windows.h>
#include <stdio.h>

UINT32 ip_to_hex(UINT32 ip_add)
{
   UINT32 ip_hex;
   //code convert ip to hex
   return ip_hex; 
}

void main()
{
  //ip_to_hex(70.42.23.121);
  system("pause");
}

Did you try IP "123.30.128.10" , IP hex : 0x7b1e800a
When i try "%x" , it`s wrong

        printf("%x \n", 123);
	printf("%x \n", 30);
	printf("%x \n", 128);
	printf("%x \n", 10);

And this is result
7b 1e 80 and a , not 0a
further i think we must separate each octect by a (dot) . , Then convert decimal to hexa
Can you help me ?
Thank guy.

[Clark_Kent_SuperCodr]

Do this:

printf("0%x \n", 10);

But if it's greater than decimal 16 ( hex 10) then the 0%x is not needed.

[S_M_A]

See http://msdn.microsoft.com/en-us/libr...(v=vs.85).aspx

[cilu]

I don't understand your ip_to_hex() function. If you want to convert a string with the ip in this format "70.42.23.121" then your function should take a string and not an integer.

[headshot]

Hi S_M_A , I have tried that code , but it`s wrong . Did you try http://www.mustat.com/127.0.0.1 . you can see ip hex.

Hi Clark_Kent_SuperCodr and cilu
Can you demo some of code for me ?

UINT32  ip_to_hex(char ip_add)
{
	UINT32 ip_hex;
	ip_hex =inet_addr(( ip_add).ToChar);
	//printf("0x%08x\n", ip_hex);
	return ip_hex;
}

Thank for you.

[cilu]

headshot, you don't seem to understand the difference between integers, characters or strings. I think you need to start with the basics and then get to more complicated things.

unsigned int ip_to_hex(const char* strip)
{
   unsigned int ip = 0;
   char* str = _strdup(strip);
   char delimiters[] = ".";
   char* token = strtok(str, delimiters);
   int tokencount = 0;
   while(token != NULL)
   {
      if(tokencount < 4)
      {
         int n = atoi(token);
         ip = ip | n << 8 * (3 - tokencount);
      }
      tokencount++;
      token = strtok(NULL, delimiters);
   }
   free(str);

   if(tokencount != 4)
      ip = 0;

   return ip;
}

int _tmain(int argc, _TCHAR* argv[])
{
   int ip = ip_to_hex("127.0.0.1");

   return 0;
}

[headshot]

Hi cilu .
Yes, my ideas exactly what you do
Thank you so much