how can I see if i'm online ?

Hi, there is in C something I can do if I want to see if I'm online ?

Thanx ;)

Find out how to do network connections in C (I think you'd have to have an extra library for this - unless there's a way to route stdin/out through a modem), and then treat it like finding out if opening a file worked. Open a file and then use an if statement on the result of that file. If it returns true - you're connected. If it returns false, you're not.

"Usually the best way to determine if you have a connection to a particular computer is to attempt the connection."

Q242558: How To Detecting(sic) If You Have a Connection to the Internet

a quick help :

Code:

---

#include <stdio.h>
#include <stdlib.h>
#include <wininet.h>

int main()
{
 
if (InternetGetConnectedState(INTERNET_CONNECTION_OFFLINE,0) == FALSE)
    prinft("1");
   
  else
    printf("2");
 
  system("PAUSE");       
  return 0;
}

---

I link Wininet.lib too....... and I get this :

8 main.c `INTERNET_CONNECTION_OFFLINE' undeclared (first use in this function)


why ??


ps( in the code (INTERNET_CONNECTION_OFFLINE,0) it is bad written but it the forum, not my code)

The first argument to the function takes the address of a DWORD that will return additional information.

Code:

---

int main(void)
{
    DWORD dwState;

    if (InternetGetConnectedState(&dwState, 0) == FALSE)
    {
        printf("1");
    }
    else
    {
        printf("2");
    }

    system("PAUSE");       
    return 0;
}

---

You may need to update your header/library files.

ahhhhhhhh now i got it !!!

thanx