Using Arrays and Multidimensional Arrays in C

[kardon33]

Good day all,

First,
I am rather new to C programming or at least don't use it enough to get used to it.

My question,

What part of my script needs to do is monitor a port and record the PACKETS and WHO sent them into a multidimensional array. Also I want it to know if that IP address is already in the array and if it is just update the PACKET.

Like:
[Array][1] = [IP][PACKET]
[Array][2] = [IP][PACKET]

I know in C you have to declare variables first so the processor can allocate the right amount of memory, but in my program I will not know exactly how many packets there are going to be. It is safe to say (If I have to) that theres not going to be more than 100max .

And than in the end I need to return that array so a different function can use it.

How would i go about doing this?

First I know i need to declare my array/char with 100 slots with 2 slots in each of them. Let me know if this is correct.

 char * array[100][2]; 

Now for setting the values. (How do i search an array for a value)

In word form: search all number 0 slots in array for 2.0.0.2 if 1 array slot 1 = buf;

 
array[i][0] = inet_ntoa(a.sin_addr); 
array[i][1] = buf;
 

Now for laughs lets try to print that data with printf()

    while(i < sizeof(array)) {  
       printf("%d - %s\n", i ,array[i][0] );  
    i++;
      }   
 

So all in all I think I have the method close to right (maybe not) but I am just doing a few little things wrong?

Thanks in advance for any help received?

Cheers :)

[Laharl]

Read this Howto.

Added to make this long enough.