Class 基本语法

header file

#ifndef CAT_H_
#define CAT_H_

class Cat {
 public: 
    void speak();
    void jump();
};

#endif

Cat.cpp

#include <iostream> 
#include "Cat.h"

void Cat::speak() {
    using std::endl;
    using std::cout;
    cout << "Meouwww!!" << endl;
}

void Cat::jump() {
    using std::cout;
    using std::endl;
    cout << "Jumping to top of bookcase" << endl;
}

main.cpp

#include <iostream>
#include "Cat.h"

int main() {
    Cat cat;
    cat.speak();
    cat.jump();
    return 0;
}

执行： g++ -I Cat.h Cat.cpp main.cpp -o app && ./app