2-1-2.c++基础

第一个c++程序

/**
* the is my first c++ program
*/
#include <iostream>
int main(int argc,char* argv[]){
    std::cout<<"hello world"<<std::endl;
    return 0;
}

编译

clang++ -std=c++11 -g -o hello helloworld.cpp

运行

./hello

第二个c++程序
Human.h

#include <iostream>

class Human{
    public:
        Human(){
            std::cout<<"构造函数"<<std::endl;
            age = 0;
            sex = 0;
        }
        ~Human(){
            std::cout<<"destruct"<<std::endl;
        }
    public:
        void setAge(int a);
        int getAge();
        
        void setSex(int s);
        int getSex();
    private: 
        int age;
        int sex;
};

Human.cpp

#include <iostream>
#include "Human.h"
void Human::setAge(int a){
    age = a;
}

int Human::getAge(){
    return age;
}

void Human::setSex(int s){
    sex = s;
}

int Human::getSex(){
    return sex;
}

main.cpp

#include <iostream>
#include "Human.cpp"
int main(int argc,char* argv[]){
    //栈
    Human human;
    human.setAge(10);
    human.setSex(0);
    std::cout<<human.getAge()<<human.getSex()<<std::endl;

    //堆,不释放资源，未执行destruct
    Human* human1 = new Human();
    human1->setAge(8);
    human1->setSex(0);
    std::cout<< human1->getAge()<< human1->getSex() <<std::endl;
}

clang++ -std=c++11 -g -o main main.cpp
./main