Learning immediately: https://edu.csdn.net/course/play/20589/257715?utm_source=blogtoedu
Note: the compiler to ignore this part, separated from the understanding that:
1. Log out of your code
2. Explain the content code
Use annotations can be more convenient for people to read the content of your code, make code more readable.
Notes divided into: single-line comment multi-line comments text notes.
Single-line comments: // at the beginning of the contents of a single line comment only single-line comment
Multi-line comments: / * * the beginning / end
Text Notes: ///