update

2020-04-06 00:57:02 +08:00
parent f97c156cc4
commit a4d828bb4c
120 changed files with 4413 additions and 0 deletions
--- a/practical_exercises/10_day_practice/day4/const用法/readme.md
+++ b/practical_exercises/10_day_practice/day4/const用法/readme.md
@@ -0,0 +1,8 @@
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵Ķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>г<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD>ܱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>¡<EFBFBD>
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õĶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>¡<EFBFBD>
+const  <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD>  &<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󣺱<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>г<EFBFBD>ʼ<EFBFBD><EFBFBD>,<2C><><EFBFBD>ܱ<EFBFBD><DCB1><EFBFBD><EFBFBD>¡<EFBFBD>
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD>  const  <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>飺<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD>ز<EFBFBD><EFBFBD>ܱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>¡<EFBFBD>
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD>  const  <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>[<5B><>С]...
+<EFBFBD><EFBFBD>ָ<EFBFBD>룺ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>롣
--- a/practical_exercises/10_day_practice/day4/const用法/常对象与常引用.cpp
+++ b/practical_exercises/10_day_practice/day4/const用法/常对象与常引用.cpp
@@ -0,0 +1,24 @@
+
+#include<iostream>
+using namespace std;
+void display(const double& r);
+
+class A
+{
+     public:
+         A(int i,int j) {x=i; y=j;}
+     private:
+         int x,y;
+};
+int main()
+{   double d(9.5);
+     display(d);
+     A const a(3,4); //a<>ǳ<EFBFBD><C7B3><EFBFBD><EFBFBD>󣬲<EFBFBD><F3A3ACB2>ܱ<EFBFBD><DCB1><EFBFBD><EFBFBD><EFBFBD>
+     system("pause");
+     return 0;
+}
+void display(const double& r)
+//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>βΣ<CEB2><CEA3>ں<EFBFBD><DABA><EFBFBD><EFBFBD>в<EFBFBD><D0B2>ܸ<EFBFBD><DCB8><EFBFBD> r<><72><EFBFBD><EFBFBD><EFBFBD>õĶ<C3B5><C4B6><EFBFBD><EFBFBD><EFBFBD>
+{   cout<<r<<endl;   }
+
+
--- a/practical_exercises/10_day_practice/day4/const用法/常对象与普通函数.cpp
+++ b/practical_exercises/10_day_practice/day4/const用法/常对象与普通函数.cpp
@@ -0,0 +1,41 @@
+#include<iostream>
+using namespace std;
+class R
+{    public:
+         R(int r1, int r2){R1=r1;R2=r2;}
+         //const<73><74><EFBFBD>ֳ<EFBFBD>Ա<EFBFBD><D4B1><EFBFBD>غ<EFBFBD><D8BA><EFBFBD>
+         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>
+*/
+
+void R::print()
+{     
+    cout<<"<EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>"<<endl;
+    cout<<R1<<":"<<R2<<endl;
+}
+//ʵ<><CAB5><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>
+void R::print() const
+{     
+    cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>"<<endl;
+    cout<<R1<<";"<<R2<<endl;
+}
+int main()
+{   
+    R a(5,4);
+    a.print();  //<2F><><EFBFBD><EFBFBD>void print()
+    //ͨ<><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD>ܵ<EFBFBD><DCB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĳ<EFBFBD><C4B3><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD>
+    const R b(20,52);  
+    b.print();  //<2F><><EFBFBD><EFBFBD>void print() const
+    system("pause");
+    return 0;
+}
+
+
--- a/practical_exercises/10_day_practice/day4/友元函数/readme.md
+++ b/practical_exercises/10_day_practice/day4/友元函数/readme.md
@@ -0,0 +1,9 @@
+# <20><>Ԫ<EFBFBD><D4AA><EFBFBD>
+<EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD>C++<2B>ṩ<EFBFBD><E1B9A9>һ<EFBFBD><D2BB><EFBFBD>ƻ<EFBFBD><C6BB><EFBFBD><EFBFBD>ݷ<EFBFBD>װ<EFBFBD><D7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>صĻ<D8B5><C4BB>ơ<EFBFBD>
+ͨ<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>
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD>ࡣ
+Ϊ<EFBFBD><EFBFBD>ȷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݷ<EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD>ԭ<EFBFBD>򣬽<EFBFBD><EFBFBD>龡<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>û<EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD>
+# <20><><EFBFBD><EFBFBD>ʹ<EFBFBD>ã<EFBFBD>
+<EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹؼ<EFBFBD><EFBFBD><EFBFBD>friend<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD>ķǳ<EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܹ<EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> private <20><> protected<65><64>Ա
+<EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڷ<EFBFBD>װ<EFBFBD>Ϳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Է<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+<EFBFBD><EFBFBD><EFBFBD>ʶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>еĳ<EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
--- a/practical_exercises/10_day_practice/day4/友元函数/友元模块.cpp
+++ b/practical_exercises/10_day_practice/day4/友元函数/友元模块.cpp
@@ -0,0 +1,31 @@
+//ʹ<><CAB9><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+#include <iostream>
+#include <cmath>
+using namespace std;
+class Point{
+  public:
+    Point(int x=0,int y=0):X(x),Y(y){}
+    int GetX(){
+      return X;
+    }
+    int GetY(){
+      return Y;
+    }
+    friend float Distance(Point &a,Point &b);
+  private:
+    int X,Y;//˽<><CBBD><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD>Ա
+};
+//ͨ<><CDA8><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA>һ<EFBFBD><D2BB>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA>һ<EFBFBD><D2BB>ģ<EFBFBD><C4A3><EFBFBD>ܹ<EFBFBD><DCB9><EFBFBD><EFBFBD>õ<EFBFBD><C3B5><EFBFBD>һ<EFBFBD><D2BB>ģ<EFBFBD><C4A3><EFBFBD>б<EFBFBD><D0B1>Ǳ<EFBFBD><C7B1><EFBFBD><EFBFBD>ص<EFBFBD><D8B5><EFBFBD>Ϣ<EFBFBD><CFA2>
+float Distance(Point &a, Point &b){
+  double dx = a.X-b.X;
+  double dy = a.Y-b.Y;
+  return sqrt(dx*dx+dy*dy);
+}
+
+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;
+    system("pause");
+    return 0;
+}
--- a/practical_exercises/10_day_practice/day4/友元函数/友元类.cpp
+++ b/practical_exercises/10_day_practice/day4/友元函数/友元类.cpp
@@ -0,0 +1,49 @@
+#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>
+*/
+
+/*
+<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>
+*/
+class A{
+  friend class B;
+  public:
+    void Display(){
+      cout<<x<<endl;
+    }
+    private:
+      int x;
+};
+class B
+{   public:
+      void Set(int i);
+      void Display();
+    private:
+      A a;
+};
+void B::Set(int i)
+{
+   a.x=i;
+}
+void B::Display()
+{
+   a.Display();
+}
+
+int main(int argc, char const *argv[])
+{
+    B b;
+    b.Set(10);
+    b.Display();
+
+    system("pause");
+    return 0;
+}
+
+/*
+<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>
+*/
--- a/practical_exercises/10_day_practice/day4/拷贝构造函数/clock.cpp
+++ b/practical_exercises/10_day_practice/day4/拷贝构造函数/clock.cpp
@@ -0,0 +1,47 @@
+#include<iostream>
+#include"clock.h"
+using namespace std;
+Clock::Clock(int NewH,int NewM,int NewS)
+{
+    this->Hour=NewH;
+    this->Minute=NewM;
+    this->Second=NewS;
+}
+Clock::Clock(Clock &c)
+{
+    this->Hour=c.Hour;
+    this->Minute=c.Minute;
+    this->Second=c.Second;
+}
+void Clock::SetTime(int NewH,int NewM,int NewS)
+{
+    //<2F>Ӳ<EFBFBD><D3B2><EFBFBD>thisָ<73>붼һ<EBB6BC><D2BB>
+    this->Hour=NewH;
+    this->Minute=NewM;
+    this->Second=NewS;
+}
+void Clock::ShowTime()
+{
+    cout<<this->Hour<<endl;
+    cout<<this->Minute<<endl;
+    cout<<this->Second<<endl;
+}
+//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+Clock::~Clock()
+{
+
+}
+int main(int argc, char const *argv[])
+{
+    Clock c(0,0,0);
+    
+    c.SetTime(10,20,30);
+    c.ShowTime();
+    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>캯<EFBFBD><ECBAAF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+    Clock c1(c);
+    c1.ShowTime();
+    c1.SetTime(90,98,99);
+    c1.ShowTime();
+    system("pause");
+    return 0;
+}
--- a/practical_exercises/10_day_practice/day4/拷贝构造函数/clock.h
+++ b/practical_exercises/10_day_practice/day4/拷贝构造函数/clock.h
@@ -0,0 +1,26 @@
+#ifndef CLOCK
+# define CLOCK
+class Clock
+{
+    public:
+        Clock(int NewH,int NewM,int NewS);
+        Clock(Clock &c);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>캯<EFBFBD><ECBAAF>,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>캯<EFBFBD><ECBAAF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˼Ӳ<CBBC><D3B2>Ӷ<EFBFBD><D3B6><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1>ʹ<EFBFBD>á<EFBFBD>
+        void SetTime(int NewH,int NewM,int NewS);
+        void ShowTime();
+        ~Clock();//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>Ĭ<EFBFBD>ϵ<EFBFBD><CFB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+    private:
+        int Hour,Minute,Second;
+};
+
+#endif
+
+
+/*
+#ifndef   <20><>ʶ<EFBFBD><CAB6>
+       <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1
+#else
+       <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2
+#endif
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2<EFBFBD><EFBFBD>
+
+*/
--- a/practical_exercises/10_day_practice/day4/时钟练习题/重载()的时钟.cpp
+++ b/practical_exercises/10_day_practice/day4/时钟练习题/重载()的时钟.cpp
@@ -0,0 +1,25 @@
+#include <iostream>
+using namespace std;
+class Time{
+private:
+    int hh,mm,ss;
+public:
+    Time(int h=0,int m=0,int s=0):hh(h),mm(m),ss(s){}
+    void operator()(int h,int m,int s) {
+        hh=h;
+        mm=m;
+        ss=s;
+    }
+    void ShowTime(){
+        cout<<hh<<":"<<mm<<":"<<ss<<endl;
+    }
+};
+int main(){
+    Time t1(12,10,11);
+    t1.ShowTime();
+    t1.operator()(23,20,34);	
+    t1.ShowTime();
+    t1(10,10,10);               	
+    t1.ShowTime();
+    system("pause");
+}
--- a/practical_exercises/10_day_practice/day4/时钟练习题/重载++的时钟.cpp
+++ b/practical_exercises/10_day_practice/day4/时钟练习题/重载++的时钟.cpp
@@ -0,0 +1,45 @@
+/*
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>࣬<EFBFBD>ܹ<EFBFBD><EFBFBD><EFBFBD>¼ʱ<EFBFBD><EFBFBD><EFBFBD>֡<EFBFBD><EFBFBD>룬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>++<2B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿִ<C3BF><D6B4>һ<EFBFBD><D2BB>++<2B><><EFBFBD>㣬<EFBFBD><E3A3AC>ʱ1<CAB1>룬<EFBFBD><EBA3AC>Ҫʹ<D2AA><CAB9>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>ܹ<EFBFBD><DCB9>Զ<EFBFBD><D4B6><EFBFBD>λ<EFBFBD><CEBB>
+*/
+#include<iostream>
+using namespace std;
+class Time{
+    public:
+        Time(int h=0,int m=0,int s=0){
+            hour = h;
+            minute = m;
+            second = s;
+        }
+        void operator++();
+        void showTime(){
+            cout<<"<EFBFBD><EFBFBD>ǰʱ<EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>"<<hour<<":"<<minute<<":"<<second<<endl;
+        }
+
+    private:
+        int hour,minute,second;
+
+};
+
+void Time::operator++(){
+    ++second;
+    if(second=60){
+        second=0;
+        ++minute;
+        if(minute==60){
+            minute=0;
+            hour++;
+            if(hour==24){
+                hour=0;
+            }
+        }
+    }
+}
+
+int main(int argc, char const *argv[])
+{
+    Time t(23,59,59);
+    ++t;
+    t.showTime();
+    system("pause");
+    return 0;
+}