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.
I have asked him about food expiration dates and this is what he says. Everything except honey has a shelf life. Expiration dates are also sell by dates that the grocery stores have to abide by. If properly stored, milk is good 5 days after the expiration date. Other items such as the Trader Joe's hummus you refer to have expiration dates on the very safe side of caution.