简单接口封装简单接口封装

【简单接口封装】细节隐藏，对外只透出一个头文件和一个函数！
1. main.cpp

#include #include "animal.hpp"int main(){ Animal*cnt_1 =create(); cnt_1->run(); //Tiger is running !!! return 0; }

对外只透出animal.hpp 文件，其他封装，细节隐藏！
2. animal.hpp

#ifndef animal_hpp #define animal_hpp#include class Animal { public: virtual void run() = 0; }; Animal* create(); #endif /* animal_hpp */

以下内容编译生成库文件，存在lib文件夹下，不对外透出！
3. animal.cpp

#include "animal.hpp" #include "tiger.hpp"Animal* create() { return new Tiger; }

4. tiger.hpp

#ifndef tiger_hpp #define tiger_hpp#include #include "animal.hpp"class Tiger: public Animal {public: void run(); }; #endif /* tiger_hpp */

4. tiger.cpp

#include "tiger.hpp" #include void Tiger::run() { std::cout << "Tiger is running !!!" << std::endl; }

简单接口封装