C++ string

https://blog.51cto.com/yang/2892175

C++ 大大增强了对字符串的支持，除了可以使用C风格的字符串，还可以使用内置的 string 类。string 类处理起字符串来会方便很多，完全可以代替C语言中的字符数组或字符串指针。

Found this when I was in 10th grade been using it since:

For sin(a+b)= sin(a)cos(b)+cos(a)sin(b)
Say out loud: “sine cosine cosine sine”

For cos(a+b)= cos(a)cos(b)-sin(a)sin(b)
Say out loud: “cosine cosine SIGN sine sine”
Notice the word “SIGN”. The word SIGN is there to remind you that the SIGN of the rightmost term has the opposite SIGN of the input to the cosine on the left hand side of the equation (if its a+b, then subtract. if its a-b, then add).

How does a website work?
An example -> sport-csc.site

structure of a website

0. Intro

For some reasons(see the blog yourself), I wanted to start my personal blog. The requirements of the blogger platform are: easy maintenance(including deployment and easy fee), and allowing custom configurations(themes, domain, font, etc.). In order to meet these requirements as well as to be cool, I finally chose Hexo, a .js based static website generator.

why Hexo

https://superuser.com/questions/320415/mount-device-with-specific-user-rights

To mount a device with certain rights, you can use the -o Option directive while mounting the device.

clean cache(public folder): hexo clean

generate public files(static files): hexo g

preview the website: hexo s (--debug)