Figure 1. Is the teacher give the code
Figure 2 is I knock code
Figure 3 is I had deleted all wrong in a row, finished can run, I want to know this change isn't it, or any other method

CodePudding user response:

Public class * * {...}) is to define a class and the class name must be in sync with the file name, class * * {...}) and the class name of the file name, see the public the difference between a class and class know well,

CodePudding user response:

Reading and reading a book to read the book first clear word a word a word to see clearly, looking back to see their own problems don't silly again