title: C program, pointer argument won't hold values
body: <p>Hi guys I'm sorry to bother you with this but I'm starting to loose it here.. 
  I have recently started programming in C again and I have run into some kind bug that just I can't figure out..
  My C program is(should be) an easy one, so it needs to do the following:
  An undefined number of natural elements is read form the keyboard until a 0 is read. After that it has to compute the product of all elements and compute the number of 0-s on the end of that result..</p>
  
  <pre><code>int input(int* v)                      {
  
      int n = 0;   
      do                                                            
      {
          n = n + 1;
          v = (int*) realloc(v,n*sizeof(int));        printf("Enter number %d: ",n);          scanf("%d",&amp;v[n-1]);
      }
      while(v[n-1] != 0);           
      n--;
      return n;  }
  
  int tZeros(int* v, int eNb)     {    
      int i;
      int  val = 1;
      for(i = 0; i &lt; eNb; i++)
      {
          val = val * v[i];        
      }
  
      i=0;
      while(val % 10 == 0)
      {
          i++;
      }  
      return i; }
  
  int main (int argc, char** argv)     {
  
      int* v = NULL;                                                  
      int eNb = input(&amp;(*v));                                          
      if(eNb&gt;0)                                                       
      {
          int zeros = tZeros(v, eNb);
          printf("The number of ending zeros in the product of the given numbers is: %d",zeros);
  
      }
      else
      {
          printf("No elements to do computations with!\n");
      }
      free(v);
      return 0; 
      }
  </code></pre>
  
  <p>The input function should return two things: The number of elements and the actual elements in the dynamic array.. But after the input function runs the values entered there are all lost..
  I pass the argument into input as a pointer so it should change the values at the correct addresses right?</p>
  
  <p>All suggestions are welcome!
  Thnx!</p>
  
  <p>P.s. I think the problem is with my array v.. after exiting the input function it looses all values..</p>