The most common alternative to #pragma once is to use #define to set an include guard macro, the name of which is picked by the programmer to be unique to that file. For example, #ifndef GRANDPARENT_H #define GRANDPARENT_H ... contents of grandparent.h #endif /* !GRANDPARENT_H */.
1 Costco is three years old and has 17 locations, 1.3 million members, and 3,740 employees.  Costco's first Pharmacy opens in Portland, Oregon and the Tukwila, WA warehouse becomes the house of the company's first fresh meat department.
Costco's worldwide headquarters are in Issaquah, Washington, but the company opened its first warehouse in nearby Seattle in 1983. Through mergers, Costco's overall corporate history dates back to 1976, when its former competitor Price Club was founded in San Diego, California.