struct SqArray
{
  int * base
  int dim;
  int * bounds;
  int * constants;
  int elemtotal
}A;
InitArray(struct SqArray * A,int dim,va_list ap)/*va_list is a list type can contain variable elements*/
{
  int i;
  int p = dim;
  if (dim <1 || dim > MAX_ARRAY_DIM)
  {
    printf("The dimension %d you input is overflow!/n",dim);
    return 0;
  }
  A->dim = dim;
  A->bounds = (int *)malloc(dim *sizeof(int));
  if (!A->bounds) exit(OVERFLOW);
  A->elemtotal = 1;
  va_start(ap,dim);
  for (i=0;i<dim;++i)
  {
    A->bounds[i] = va_arg(ap,int);
    if (A->bounds[i]<0) exit(OVERFLOW);
    A->elemtotal *= A->bounds[i];
  }
  va_end(ap);
  A->base = (int *)malloc(A->elemtotal * sizeof(int));
  if (!A->base) exit(OVERFLOW);
  A->constants = (int *)malloc(dim* sizeof(int));
  if (!A->constants)
  A->constants[dim-1]=1;
  for(i = dim-2;i>=0;--i)
  A->constants[i] = A->bounds[i+1]*A->constants[i+1];
  return OK;
}

这个算法里面很多不懂，像int*bounds;
  int * constants;
  int elemtotal；
A->constants[i] = A->bounds[i+1]*A->constants[i+1];
这些究竟代表了数组的什么，求解释，或者推荐一本书给我又详细介绍的