/**
* get minimum price associated product form inputbuffers
*/
Product getMinProduct(InputBuffer * head)
{
Product product;
if (head==NULL||head->next==NULL)
{
product.price=-1;
return product;
}
InputBuffer * p=head->next;
InputBuffer * q=p;
float minPrice=p->data[p->currentIndex].price;
while (p!=NULL)
{
float price=p->data[p->currentIndex].price;
if (minPrice>price)
{
q=p;
minPrice=price;
}
p=p->next;
}
product.setId(q->data[q->currentIndex]);
product.price=minPrice;
product.setName();
q->currentIndex++;
if (q->currentIndex>=q->count) //retrieve data
{
if(readDataToInputBuffer(q->infile, q->count, q->data))
{
q->currentIndex=0;
}
else // file is readed completely
{
deleteInputBufferFromInpuBuffers(head, q);
}
}
return product;
}
