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Tour C language tutorial 5 - conditional statements This is the fifth tutorial of traveling around C language. You will understand conditional statements in this article. condition The condition is to judge whether the statement is true. In C language, 0 means not true, which is false in logic, and non-0 means true, which is true in logic. F ...

function A function is a code segment that implements a certain function. It passes in parameters and returns values. Python built-in function len, pass it a list, and it will return the length of the list (return value); The print function prints the incoming object to the screen. It does not return any value. We say it returns None; The ret ...

polymorphic 1. Concept Polymorphism is an important feature of object-oriented programming (OOP). It refers to that the same entity has multiple forms at the same time, that is, the same object represents different objects at different times. It refers to multiple forms of objects. Different subclass objects can be regarded as parent cla ...

The use of Fragment in Android case -- Sichuan cuisine menu This case will demonstrate how to display two fragments in one Activity (one Fragment is used to display the list of Sichuan cuisine and one Fragment is used to display the practice of Sichuan cuisine), and realize the communication function between Activity and Fragment 1. Preparati ...

1. Simple use of thread #include <iostream> #include <thread> #include <Windows.h> using namespace std; void thread01() { for (int i = 0; i < 5; i++) { cout << "Thread 01 is working !" << endl; Sleep(100); } } void thread02() { for (int i = 0; i < 5; i++) { cout << "Thread 02 is working !" ...

1. StringTable StringTable location of different JDK versions 1.1 basic characteristics of string String string, represented by a pair of "".The String class is declared as final and cannot be inheritedString: implements the Serializable interface: indicates that the string supports serialization, and implements the Comparable int ...

1. The whole story One cool afternoon, I saw a news that the interface was being mechanically called. I suspected that someone was using script to brush the interface (mainly to divert water from the platform). what? No, the general interface request is encrypted. Unless you know the encryption key and encryption method, the call will not ...

The Java virtual machine design team intends to implement the action of "obtaining the binary byte stream describing a class through the fully qualified name of a class" in the class loading stage outside the Java virtual machine, so that the application can decide how to obtain the required class by itself. The code that implements t ...

Basic knowledge of C + + (I) 1. Foreword 👉👉 In 1979, C + + was born and sprouted. In 1983, it was officially renamed C + +, Benjani Strauss LUP (Bjarne Stroustrup). C + + can carry out both process oriented programming in C language and object-oriented programming (encapsulation, inheritance and polymorphism) in Java language. It ...

outline ·In 2002, the prototype of Spring framework was launched for the first time: interface21 framework! Spring is an open source free framework (container)!Spring is a lightweight, non intrusive framework!Inversion of control (IOC), aspect oriented programming (AOP)!Support transaction processing and framework integration! IOC ...