Answer: POS stands for point of sale.
Merchants typically use a POS system to complete a sales transaction. In its most basic definition, a POS system is a combination of POS hardware and POS software to create a POS machine for processing a transaction and payment.
Explanation: Hope this helps, have a great day.
Explanation:
just want points tbh but have a good day
Answer:
In computing, memory is a device or system that is used to store information for immediate use in a computer or related computer hardware and digital electronic devices. The term memory is often synonymous with the term primary storage or main memory. An archaic synonym for memory is store.
Answer:
if the number of elements in the array are equal to the size of the array then return -1.
Explanation:
We are implementing stack using array.Stack is a LIFO(Last In First Out) type data structure.Insertion and deletion is from one end only.
So while push operation or inserting elements in the stack using array we have to check that the capacity of array is not reached.If reached then no element can be inserted in the stack.If not then we can insert element in the stack.