How to concatenate array index for same elements for specified range?

[gevni]

Hi
sorry i am posting the same problem again. Actually i found some mistakes in my post. So here is the modified version. I want to concatenate the indexes of elements of array that has the same value for specific range.In my case the range is 4
My code is:

int element[8]={2,2,0,3,3,0,1,2};
col=4;
int rr;
int qq=0;

        for (rr=0; rr<col;rr++){
          join_tmp[qq]=rr;
          while ((element[rr]== element[rr+1]) ) {
            join_tmp[qq]= concatenate(rr+1, join_tmp[qq]);
            printf("%d\n",join_tmp[qq]);
            rr++;
          }
          qq++;
        }

//FUNCTION TO CONCATENATE INTEGER VALUES OF SAME GROUP IN A COLUMN
unsigned concatenate(unsigned x, unsigned y) {
  unsigned pow = 10;
  while(y >= pow)
    pow *= 10;
  return x * pow + y;        
}

I want input like
10
2
3
Instead i get
10
2
34

how can i fix it so it will only iterate to the specific range?

[AndiPersti]

You need to stop the while loop when "rr" reaches "col".

Awful variable names BTW.

Bye, Andreas

[gevni]

Thanks i get it