just know 3 things: 1  Pointer is a variable that store the address of another variable (or just any address). * 2  is used to get the value at the memory location that is stored in the pointer variable. & 3  operator gives the address of a memory location.sually what I do is represent memory as a grid, so that I can make up addresses, highlight different memory spaces and write in the cells values (or even further, their binary representations) and link the pointers in memory to the values they point at.
The accepted rule of thumb is that if you're properly refrigerating it, your carton of whole milk's expiration date is five days after the sell-by date.
Generally, under proper refrigeration, dairy products are still good 7-10 days after the expiration dates. The expiration dates are really best by dates. The food product will not magically spoil when that day occurs. In my house, we drink milk that's a week past prime without giving it another thought.