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keyboard that is the fallback key) printf ("\b");7, C + + program, often call the system function, to implement the DOS window interface related operations.For example, System ("CLS");/* Clear screen operation */8. Use of the Exit functionFunction: Closes all files and terminates the process being executed. In C + +, the usual form: exit (0);/* indicates normal exit, end program */equivalent to return 0;exit (1),/* indicates abnormal exit, end progra

Reprint Please specify source: http://www.cnblogs.com/ymingjingr/p/4271742.htmlDirectory machine Learning Cornerstone Note When you can use machine learning (1) Machine learning Cornerstone Note 2--When you can use machine learning (2) Machine learning Cornerstone Note 3--When you can use machine learning (3) (modified version) machine learning Cornerstone Notes

;}} Class Zi extends Fu{int num = 5;void Show () {System.out.println (num+ "..." +super.num+ "..." +super.getmoney ());}} public class Test5 {public static void main (string[] args) {Zi z = new Zi (); Z.show ();}}6. Features of member functions in the child parent class:Package com.date8;/** * Second, member function features in child parent class * 1. When there is a member function with the same name in the child parent class, the subclass overrides the parent class * 2. The following Eat met

can only be defined as abstract classes, abstract classes may not contain abstract method, abstract; Abstract methods and classes are modified by abstract, and abstract methods have no method body; Abstract classes cannot be instantiated and cannot be created with new; The constructor of the abstract class is not responsible for creating the instance, which can be provided to the subclass invocation; Play polymorphic characteristics,

): self.__test () #调用私有方法 print (' Private property%s '%self.__ Type) print (' Dog [%s] Wang Barking '%self.name) def __test (self): #私有方法 self.name = ' Test ' # d = d () d.cry () # Normal can call d.__type# error, because it is a private property, outside cannot access the d.__test () #报错, because it is a private method, outsi