C++ self-learning notes (1)

Ok, starting today, I'm going to start teaching myself to use C++.

( For anyone other than myself see this, I'm a Chinese guy and I'm writing in English because I'm trying to improve my English writing skills. Pardon me for that. If you see and grammatic or spelling mistake, please leave a comment)

1. Namespace

Namespace is a space created to contain all the names and keywords in one or several related pieces of codes. When you define a namespace, it can contain variables, functions, classes, macros , typedef, etc.

There is also a standared Namespace defined by C++ which contains all the keywords from c and the ones later defined in C++. This Standared Namespace can be called by wirting "using namespace std;" or "std::(+keywords)". For different purposes, you can call the standared namespace at different parts of the code using either method.

EXAMPLE:



result:



Ok! That's it for the first time! I'll keep updating tomorrow. ;)