继承

Class public private

class Enemy

{

public:

int Damage;

void Attack();

Enemy(int hp,int damage);

Enemy();

int GetHP();

void Attack();

private:

void Attack();

int HP;

};

class Enemy

{

public:

int HP;

int Damage;

void Attack();

void TakeDamage();

Enemy(int hp,int damage);//构造函数

Enemy();

};

Enemy::Enemy(int hp,int damage){

HP=hp;

Damage=damage;

}

Enemy::Enemy(){

HP=1000;

Damage=1000;

}

int main()

{

Enemy enemy=Enemy(100,10);//我们使用自己定义的类声明的变量，可以成为对象

enemy.HP=100;

enemy.Damage=10;

cout<<enemy.HP<<endl;

cout<<enemy.Damage<<endl;

enemy.Attack();

enemy.TakeDamage();

cout<<enemy.HP<<endl;

Enemy enemy2=Enemy();//因为提供了带有参数的构造函数，所以系统不提供无参的构造函数

cout<<enemy2.HP<<endl;

cout<<enemy2.Damage<<endl;

enemy2.TakeDamage();

enemy2.TakeDamage();

cout<<enemy2.HP<<endl;

string str;

cin>>str;

return 0;

}

类的实现、对象的定义和成员的调用

头文件

class Enemy

{

public:

int HP;

int Damage;

void Attack();

void TakeDamage();

};

源文件

void Enemy::Attack(){

cout<<"播放攻击动作"<<endl;

cout<<"播放攻击特效"<<endl;

cout<<"让别攻击的受伤"<<endl;

}

void Enemy::TakeDamage(){

cout<<"播放受伤动作"<<endl;

cout<<"播放受伤特效"<<endl;

cout<<"减少自身血量"<<endl;

}

主文件

int main()

{

Enemy enemy=Enemy();//我们使用自己定义的类声明的变量，可以成为对象

cout<<enemy.HP<<endl;

cout<<enemy.Damage<<endl;

enemy.Attack();

enemy.TakeDamage();

Enemy enemy2=Enemy();

string str;

cin>>str;

return 0;

}

Class

类的声明

 void skill1(){

cout<<"技能1"<<endl;

}

 void skill2(){

cout<<"技能2"<<endl;

}

 void skill3(){

cout<<"技能3"<<endl;

}

int main()

{

string name="东皇太一";

int hp;

int mp;

int attackPhysics;

int attackMagic;

int defensePhysics;

int defenseMagic;

string str;

cin>>str;

return 0;

}

头文件

#progma once

class Namexxxx {

//类的成员

public:

//

//

//

private:

//

//

//

}；

class Enemy

{

public:

int HP;

int Damage;

void Attack();

void TakeDamage();

};

Class

 void skill1(){

cout<<"技能1"<<endl;

}

 void skill2(){

cout<<"技能2"<<endl;

}

 void skill3(){

cout<<"技能3"<<endl;

}

int main()

{

string name="东皇太一";

int hp;

int mp;

int attackPhysics;

int attackMagic;

int defensePhysics;

int defenseMagic;

string str;

cin>>str;

return 0;

}

Pointer

指针类型和引用类型

#include<iotream>

#include<string>

using namespace std;

void change(int& a,int& b){

a=1000;

b=2000;

}

公寓大楼 内存卡

房间 内存空间 内存地址（房间号）

int main()

{

int a=324;

int b=100;

string str="sdluxncjdnchsdvhjcbsnxndjbj";

cout<<str<<endl;

//指针可以访问变量的内存地址

//指针就是用来存储某个变量的内存地址的

//int* pA;//int * pA;int *pA;

//pA = &a;

//指针* 引用& reference

//指针取地址，引用某个变量

int a=100;

int b=200;

int* p1 = &a;

cout<<p1<<endl;

p1 = &b;

cout<<p1<<endl;

int& r1=a;

cout<<r1<<":"<<a<<endl;

r1 = b;//a=b

cout<<r1<<":"<<a<<endl;

b=400;

cout<<r1<<":"<<a<<endl;

//引用的内存地址没法修改

//引用不可以指向新的变量

int a=0,b=0;

change(a,b);

cout<<a<<b<<endl;

string s;

cin>>s;

return 0;

}

Pointer

注意事项

#include<iotream>

#include<string>

using namespace std;

公寓大楼 内存卡

房间 内存空间 内存地址（房间号）

int main()

{

int a=324;

int b=100;

string str="sdluxncjdnchsdvhjcbsnxndjbj";

cout<<str<<endl;

//指针可以访问变量的内存地址

//指针就是用来存储某个变量的内存地址的

//int* pA;//int * pA;int *pA;

//pA = &a;

int* pA=&

cout<<pA<<endl;

pA=&b;

cout<<pA<<endl;

cout<<*pA<<endl;//*取得后面的（指针）内存地址所指向的数据（所存储的数据）

*pA=300//b=300

cout<<b<<":"<<*pA<<":"<<pA<<endl;

void* p1= &str; p1= &a;

cout<<*((omt*)p1)<<endl;

int* p2=NULL;

p2= &a;

string s;

cin>>s;

return 0;

}

Pointer

使用

取地址和取地址指向的数据

#include<iotream>

#include<string>

using namespace std;

公寓大楼 内存卡

房间 内存空间 内存地址（房间号）

int main()

{

int a=324;

int b=100;

string str="sdluxncjdnchsdvhjcbsnxndjbj";

cout<<str<<endl;

//指针可以访问变量的内存地址

//指针就是用来存储某个变量的内存地址的

//int* pA;//int * pA;int *pA;

//pA = &a;

int* pA=&

cout<<pA<<endl;

pA=&b;

cout<<pA<<endl;

cout<<*pA<<endl;//*取得后面的（指针）内存地址所指向的数据（所存储的数据）

*pA=300//b=300

cout<<b<<":"<<*pA<<":"<<pA<<endl;

string s;

cin>>s;

return 0;

}

//&取某个变量的地址；*取某个变量的数据

Pointer

声明和赋值

#include<iotream>

#include<string>

using namespace std;

公寓大楼 内存卡

房间 内存空间 内存地址（房间号）

int main()

{

int a=324;

string str="sdluxncjdnchsdvhjcbsnxndjbj";

cout<<str<<endl;

//指针可以访问变量的内存地址

//指针就是用来存储某个变量的内存地址的

int* pA;//int * pA;int *pA;

pA = &a;

int* pA=&

cout<<pA<<endl;

string s;

cin>>s;

return 0;

}

Pointer

#include<iotream>

#include<string>

using namespace std;

公寓大楼 内存卡

房间 内存空间 内存地址（房间号）

int main()

{

int s=324;

string s="sdluxncjdnchsdvhjcbsnxndjbj";

cout<<s<<endl;

//指针可以访问

string s;

cin>>s;

return 0;

}

数组

char cArray[10]={'a','b','3',' ','j'};

string strArray[10]={"siki","sikiedu","sikiedu.com","www.sikiedu.com"};

cout<<"char:"<<cArray[9]<<cArray[0]<<endl;

//NULL     " " 

if(strArray[9]==" "){

cout<<"Yes"<<endl;

}

int a='a';

cout<<"a:"<<a<<endl;

string str;

cin>>str;

数组初始化的多种方式

#include<iostream>

#include<string>

using namespace std;

int main(){

int enemHp=100;

//int enemyHPArray[10]={100,90,80,12,12,12,12,12,12,20};

//int enemyHPArray[]={100,90,80,12,12,12,12,12,12,20};

//int enemyHPArray[10]={100,90,80,12};

int enemyHPArray[10]={100,90,80,12,12,12,12,12,12,12,12,20};

//cout<<enemyHPArray[0]<<endl;

//cout<<enemyHPArray[9]<<endl;

enemyHPArray[3]=120;

int totalHp=0;

for(int i=0;i<10;i++){

totalHp+=enemyHPArray[i];

}

cout<<totalHp<<endl;

string str;

cin>>str;

return 0;

}

数组的声明、初始化和使用

#include<iostream>

using namespace std;

int main(){

int enemyHp=100;

//int enemy1Hp;

//int enemy2Hp;

int enemyHPArray[10];

enemyHPArray[0]=100;

enemyHPArray[1]=90;

enemyHPArray[2]=90;

enemyHPArray[3]=90;

enemyHPArray[4]=90;

enemyHPArray[5]=90;

enemyHPArray[6]=90;

enemyHPArray[7]=90;

enemyHPArray[8]=90;

enemyHPArray[9]=90;

cout<<enemyHPArray[0]<<endl;

return 0;

}

枚举类型

enum 枚举类型的名字{标识符列表}；

//enum WeekDay{

//Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday

//};

enum HeroType{

Master,Soldier,Assassin,Tnak

};

int main()

{

/*int weekday=1;

WeekDay day=Friday;

cout<<day<<endl;

int heroType=1;//1 法师 2 战士 3 刺客 4 坦克*/

HeroType heroType=Assassin;

heroType=Tank;

if(heroType==Master){

cout<<"This is Master."<<endl;

}

return 0;

}

猜数字游戏

#include<iostream>

#include<string>

#include<time.h>

using namespace std;

int main()

{

cout<<"Guess number"<<endl;

srand((int)time(0));

int number=rand()%10+1;

bool isSuccess=false;

for(int i=0;i<5;i++){

cout<<"I am thinking a number between 1-10,could you guess this number?You guess what:";

int numberGuess;

cin>>numberGuess;

if(numberGuess>number){

cout<<"It is larger than the number."<<endl;

}

else if(numberGuess==numbr){

isSucess=true;

cout<<"Congratulations,you are right!"<<endl;

break;

}

else{

cout<<"It is smaller than the number."<<endl;

}

}

if(isSucess){

}

else{

cout<<"You failed";

}
return 0;

}

猜数字游戏

#include<iostream>

#include<string>

#include<time.h>

using namespace std;

int main()

{

cout<<"Guess number"<<endl;

srand((int)time(0));

int number=rand()%10+1;

cout<<number<<endl;

return 0;

}

改进计算器小程序

bool RunCalculator();

int main()

{

cout<<"计算器！"<<endl;

while(true){

bool is  Continue= RunCalculator();

if(isContinue==false)

break;

}

return 0;

}

bool RunCalculator(){

int operator1;

cout<<"Enter the first number:";

cin>>operator1;

int operator2;

cout<<"Enter the second number:";

cin>>operator2;

int res=operator1+operator2;

cout<<"Result is:"<<res<<endl;

cout<<"Continue calculating?(y/n)<<endl;

char c;

cin>>c;

if(c=='y'){

return true;

}

else{

return false;

}

}

auto关键字

auto x=9;//根据赋值，确定x的类型

int y=9;

函数的提前声明

名字 返回值 参数类型

int add(int,int);

结构体

把不同类型组合形成新的类型

struct 名字{

成员类型 成员名；

成员类型 成员名；

}

#include<iostream>

#include<string>

using namespace std;

struct Position{

float x;

float y;

float z;

}; 

struct Enemy

{

string name;

int hp;

int attack;

Position pos;

};

int main(){

/*float  enemy1X;

float  enemy1Y;

float  enemy1Z;*/

Position enemy1Pos={100,20,90};

//enemy1Pos.x=90;

//enemy1Pos.y=10;

//enemy1Pos.z=12;

//cout<<enemy1Pos.y<<endl;

/*float  enemy2X;

float  enemy2Y;

float  enemy2Z;*/

//Position enemy2Pos;

Enemy enemy1={"siki",100,50,{1,1,1}};

Enemy enemy2;

cout<<enemy1.pos.s<<endl;

return 0;

}