An empty # sign is a null preprocessor directive. A null directive has no effect but you can use it to document your intentions, for example:
ifndef HEADER_INCLUDED#define HEADER_INCLUDED#else# // do nothing#endif
7 Ways Technology Has Changed Traditional Payments
In today’s digital world, technology has changed how we make payments. From contactless cards to mobile wallets, it’s now easier
January 26, 2023
