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feat: 统一 cpp 文件编码格式为 utf-8

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tracyxiong1
2023-01-02 20:39:00 +08:00
parent ade7173887
commit 368eda305f
63 changed files with 327 additions and 327 deletions
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4
practical_exercises/10_day_practice/day4/const用法/常对象与常引用.cpp
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@@ -13,12 +13,12 @@ class A
int main()
{ double d(9.5);
display(d);
A const a(3,4); //a<EFBFBD>dz<EFBFBD><EFBFBD><EFBFBD><EFBFBD>󣬲<EFBFBD><EFBFBD>ܱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
A const a(3,4); //a是常对象，不能被更新
system("pause");
return 0;
}
void display(const double& r)
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>βΣ<EFBFBD><EFBFBD>ں<EFBFBD><EFBFBD><EFBFBD><EFBFBD>в<EFBFBD><EFBFBD>ܸ<EFBFBD><EFBFBD><EFBFBD> r<><72><EFBFBD><EFBFBD><EFBFBD>õĶ<C3B5><C4B6><EFBFBD><EFBFBD><EFBFBD>
//常引用做形参，在函数中不能更新 r所引用的对象。
{ cout<<r<<endl; }

22
practical_exercises/10_day_practice/day4/const用法/常对象与普通函数.cpp
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@@ -3,37 +3,37 @@ using namespace std;
class R
{ public:
R(int r1, int r2){R1=r1;R2=r2;}
//const<EFBFBD><EFBFBD><EFBFBD>ֳ<EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>غ<EFBFBD><EFBFBD><EFBFBD>
//const区分成员重载函数
void print();
void print() const;
private:
int R1,R2;
};
/*
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>const;
<EFBFBD><EFBFBD><EFBFBD>const<EFBFBD>Ǻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɲ<EFBFBD><EFBFBD>֣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>ֲ<EFBFBD><EFBFBD><EFBFBD>ҲҪ<EFBFBD><EFBFBD>const<EFBFBD>ؼ<EFBFBD><EFBFBD>֡<EFBFBD>
const<EFBFBD>ؼ<EFBFBD><EFBFBD>ֿ<EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>غ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD>ܵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
常成员函数说明格式：类型说明符 函数名（参数表）const;
这里，const是函数类型的一个组成部分，因此在实现部分也要带const关键字。
const关键字可以被用于参与对重载函数的区分
通过常对象只能调用它的常成员函数
*/
void R::print()
{
cout<<"<EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>"<<endl;
cout<<"普通调用"<<endl;
cout<<R1<<":"<<R2<<endl;
}
//ʵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//实例化也需要带上
void R::print() const
{
cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>"<<endl;
cout<<"常对象调用"<<endl;
cout<<R1<<";"<<R2<<endl;
}
int main()
{
R a(5,4);
a.print(); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>void print()
//ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD>ܵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
a.print(); //调用void print()
//通过常对象只能调用它的常成员函数
const R b(20,52);
b.print(); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>void print() const
b.print(); //调用void print() const
system("pause");
return 0;
}

8
practical_exercises/10_day_practice/day4/友元函数/友元模块.cpp
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@@ -1,4 +1,4 @@
//ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//使用友元函数计算两点间距离
#include <iostream>
#include <cmath>
using namespace std;
@@ -13,9 +13,9 @@ class Point{
}
friend float Distance(Point &a,Point &b);
private:
int X,Y;//˽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD>Ա
int X,Y;//私有数据成员
};
//ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>ģ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>ģ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>ģ<EFBFBD><EFBFBD><EFBFBD>ܹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>ģ<EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><EFBFBD>DZ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD>
//通过将一个模块声明为另一个模块的友元，一个模块能够引用到另一个模块中本是被隐藏的信息。
float Distance(Point &a, Point &b){
double dx = a.X-b.X;
double dy = a.Y-b.Y;
@@ -25,7 +25,7 @@ float Distance(Point &a, Point &b){
int main()
{
Point p1(3.0,5.0),p2(4.0,6.0);
cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>"<<Distance(p1,p2)<<endl;
cout<<"两点距离为："<<Distance(p1,p2)<<endl;
system("pause");
return 0;
}

10
practical_exercises/10_day_practice/day4/友元函数/友元类.cpp
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@@ -1,13 +1,13 @@
#include<iostream>
using namespace std;
/*
<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>г<EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>ܷ<EFBFBD><EFBFBD>ʶԷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD>г<EFBFBD>Ա<EFBFBD><EFBFBD>
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>﷨<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD>friend<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
若一个类为另一个类的友元，则此类的所有成员都能访问对方类的私有成员。
声明语法：将友元类名在另一个类中使用friend修饰说明。
*/
/*
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>B<EFBFBD><EFBFBD><EFBFBD><EFBFBD>A<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD>B<EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϳ<EFBFBD><EFBFBD>Է<EFBFBD><EFBFBD><EFBFBD>A<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD>кͱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD>
<EFBFBD><EFBFBD>A<EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȴ<EFBFBD><EFBFBD><EFBFBD>ܷ<EFBFBD><EFBFBD><EFBFBD>B<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݡ<EFBFBD>
如果声明B类是A类的友元，B类的成员函数就可以访问A类的私有和保护数据，
但A类的成员函数却不能访问B类的私有、保护数据。
*/
class A{
friend class B;
@@ -45,5 +45,5 @@ int main(int argc, char const *argv[])
}
/*
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>B<EFBFBD><EFBFBD><EFBFBD><EFBFBD>A<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD>B<EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϳ<EFBFBD><EFBFBD>Է<EFBFBD><EFBFBD><EFBFBD>A<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD>кͱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD><EFBFBD>A<EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȴ<EFBFBD><EFBFBD><EFBFBD>ܷ<EFBFBD><EFBFBD><EFBFBD>B<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
如果声明B类是A类的友元，B类的成员函数就可以访问A类的私有和保护数据，但A类的成员函数却不能访问B类的私有、保护数据
*/

6
practical_exercises/10_day_practice/day4/拷贝构造函数/clock.cpp
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@@ -15,7 +15,7 @@ Clock::Clock(Clock &c)
}
void Clock::SetTime(int NewH,int NewM,int NewS)
{
//<EFBFBD>Ӳ<EFBFBD><EFBFBD><EFBFBD>thisָ<EFBFBD>붼һ<EFBFBD><EFBFBD>
//加不加this指针都一样
this->Hour=NewH;
this->Minute=NewM;
this->Second=NewS;
@@ -26,7 +26,7 @@ void Clock::ShowTime()
cout<<this->Minute<<endl;
cout<<this->Second<<endl;
}
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//析构函数
Clock::~Clock()
{
@@ -37,7 +37,7 @@ int main(int argc, char const *argv[])
c.SetTime(10,20,30);
c.ShowTime();
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>캯<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//拷贝构造函数调用
Clock c1(c);
c1.ShowTime();
c1.SetTime(90,98,99);