[SmG FlasH™]

I need to generate a random customer ID and assign it, if the ID already does not exist.

>So basically, for the moment I'm using array to store the IDs' (custid[10])
>Array size is 10 (for the moment)
>Generate a random number between 1 and 10
>Check if it already exists
>If it does not, assign to customer id array.


This is what I have tried;

Code:

#include <iostream>
#include <stdlib.h>     /* srand, rand */
#include <time.h>       /* time */

using namespace std;

int custid[10]; //array to store assigned IDs'
int randomcid; //array to store generated random ID

int randomgen()
{
    srand(time(NULL));
    randomcid = rand() % 10 + 1;
    return 0;
}

int main()
{
    custid[0] = { 1, 5, 6 }; //filling the array with some values
    for (int a = 0; a <= 10; a++)
    {
        if (custid[a] == randomcid) //if the ID already exists
        {
            randomgen(); //generate another random number
        }
        else
        {
            custid[a] == randomcid;
        }
    }

    return 0;
}

What I want it to do is say it generated 2, and the array contains the values 1 6 and 3 in the first three indexes, I want it to skip the first three indexes and assign the number 2 to the fourth index.

Hope someone helps xD