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Light-City
2020-04-06 00:57:02 +08:00
parent f97c156cc4
commit a4d828bb4c
120 changed files with 4413 additions and 0 deletions
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21
practical_exercises/10_day_practice/day3/两数交换.cpp Normal file
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#include<iostream>
using namespace std;
void swap(int & a, int & b);
int main(int argc, char const *argv[])
{
int x1(5);
int x2(7);
swap(x1,x2);
cout<<x1<<" "<<x2<<endl;
system("pause");
return 0;
}
void swap(int & a, int & b)
{
int t;
t = a;
a = b;
b = t;
}

18
practical_exercises/10_day_practice/day3/内联函数.cpp Normal file
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#include<iostream>
using namespace std;
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
inline double CalArea(double radius);
int main(int argc, char const *argv[])
{
double r(3.0);
double area;
area = CalArea(r);
cout<<area<<endl;
system("pause");
return 0;
}
//<2F>ӹؼ<D3B9><D8BC><EFBFBD>inline
inline double CalArea(double radius)
{
return 3.14*radius*radius;
}

61
practical_exercises/10_day_practice/day3/函数综合练习题.cpp Normal file
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/*
һԲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ<EFBFBD><EFBFBD>һԲ<EFBFBD>͹<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ<EFBFBD><EFBFBD>դ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>դ<EFBFBD><EFBFBD><EFBFBD>۸<EFBFBD>Ϊ35Ԫ/<2F>ף<EFBFBD><D7A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ20Ԫ/ƽ<><C6BD><EFBFBD>ס<EFBFBD>
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ3<EFBFBD>ף<EFBFBD><EFBFBD><EFBFBD>Ӿ<EFBFBD>ذ뾶<EFBFBD>ɼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̼<EFBFBD><EFBFBD>㲢<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>դ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ۡ<EFBFBD>
ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԲǶ<EFBFBD><EFBFBD>СԲ<EFBFBD><EFBFBD>
СԲ<EFBFBD>ڴ<EFBFBD>Բ<EFBFBD>м䣬СԲΪ<EFBFBD><EFBFBD>Ӿ<EFBFBD>أ<EFBFBD><EFBFBD><EFBFBD>Բ<EFBFBD><EFBFBD>СԲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*/
#include<iostream>
using namespace std;
const float PI=3.14159;
const float FencePrice=35;
const float ConcretePrice=20;
class Circle
{
private:
float radius;
public:
Circle(float r);
float Circumference() const;
float Area() const;
};
Circle::Circle(float r)
{
radius=r;
}
// <20><><EFBFBD><EFBFBD>Բ<EFBFBD><D4B2><EFBFBD>ܳ<EFBFBD>
float Circle::Circumference() const
{
return 2 * PI * radius;
}
// <20><><EFBFBD><EFBFBD>Բ<EFBFBD><D4B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
float Circle::Area() const
{
return PI * radius * radius;
}
int main(int argc, char const *argv[])
{
float radius;
float FenceCost, ConcreteCost;
// <20><>ʾ<EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뾶
cout<<"Enter the radius of the pool: ";
cin>>radius;
// <20><><EFBFBD><EFBFBD> Circle <20><><EFBFBD><EFBFBD>
Circle Pool(radius);
Circle PoolRim(radius + 3);
// <20><><EFBFBD><EFBFBD>դ<EFBFBD><D5A4><EFBFBD><EFBFBD><EFBFBD>۲<EFBFBD><DBB2><EFBFBD><EFBFBD><EFBFBD>
FenceCost = PoolRim.Circumference() * FencePrice;
cout << "Fencing Cost is <20><>" << FenceCost << endl;
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>۲<EFBFBD><DBB2><EFBFBD><EFBFBD><EFBFBD>
ConcreteCost = (PoolRim.Area() - Pool.Area())*ConcretePrice;
cout << "Concrete Cost is <20><>" << ConcreteCost << endl;
system("pause");
return 0;
}

40
practical_exercises/10_day_practice/day3/类前向声明.cpp Normal file
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/*
ʹ<EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD>Խ<EFBFBD><EFBFBD><EFBFBD>һЩ<EFBFBD><EFBFBD><EFBFBD>⣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܵġ<EFBFBD><EFBFBD><EFBFBD>Ҫע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǣ<EFBFBD>
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṩһ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
Ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ø<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뿴<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD>
*/
//<2F><>һ<EFBFBD><D2BB>
#include<iostream>
class Fred; //ǰ<><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
class Barney {
Fred x; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Fred<65><64><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>в<EFBFBD><D0B2><EFBFBD><EFBFBD><EFBFBD>
};
class Fred {
Barney y;
};
//<2F>ڶ<EFBFBD><DAB6><EFBFBD>
class Fred; //ǰ<><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
class Barney {
public:
void method()
{
x->yabbaDabbaDo(); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Fred<65><64><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD>ڶ<EFBFBD><DAB6><EFBFBD>֮ǰ<D6AE><C7B0>ʹ<EFBFBD><CAB9>
}
private:
Fred* x; //<2F><>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Fred<65><64><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD>ָ<EFBFBD><D6B8>
};
class Fred {
public:
void yabbaDabbaDo();
private:
Barney* y;
};
/*
<EFBFBD>ܽ᣺<EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ֻ<EFBFBD><EFBFBD>ʹ<EFBFBD>ñ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD>ţ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>漰<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD>ϸ<EFBFBD>ڡ<EFBFBD>
*/

30
practical_exercises/10_day_practice/day3/静态成员函数1.cpp Normal file
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/*
֪ʶ<EFBFBD>㣺
<EFBFBD><EFBFBD>̬<EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>þ<EFBFBD>̬<EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
<EFBFBD><EFBFBD>̬<EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڸ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ľ<EFBFBD>̬<EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>̬<EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*/
#include<iostream>
using namespace std;
class Application
{
public:
static void f();
static void g();
private:
static int global;
};
int Application::global=0;
void Application::f()
{ global=5;}
void Application::g()
{ cout<<global<<endl;}
int main()
{
Application::f();
Application::g();
system("pause");
return 0;
}

24
practical_exercises/10_day_practice/day3/静态成员函数2.cpp Normal file
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#include<iostream>
using namespace std;
class A
{
public:
static void f(A a);
private:
int x;
};
void A::f(A a)
{
//<2F><>̬<EFBFBD><CCAC>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD>ֻ<EFBFBD><D6BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڸ<EFBFBD><DAB8><EFBFBD><EFBFBD>ľ<EFBFBD>̬<EFBFBD><CCAC><EFBFBD>ݳ<EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD>̬<EFBFBD><CCAC>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// cout<<x; //<2F><>x<EFBFBD><78><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǵ<EFBFBD><C7B4><EFBFBD><EFBFBD><EFBFBD>
cout<<a.x; //<2F><>ȷ
}
int main(int argc, char const *argv[])
{
A a;
a.f(A());
system("pause");
return 0;
}

39
practical_exercises/10_day_practice/day3/静态数据成员.cpp Normal file
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/*
ѧϰ֪ʶ<EFBFBD><EFBFBD>
<EFBFBD><EFBFBD>̬<EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD>Ա
<EFBFBD>ùؼ<EFBFBD><EFBFBD><EFBFBD>static<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD>ά<EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD>Ա<EFBFBD><EFBFBD>ͬһ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ⶨ<EFBFBD><EFBFBD><EFBFBD>ͳ<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(::)<29><>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ࡣ
*/
#include <iostream>
using namespace std;
class Point
{
public:
Point(int xx=0, int yy=0) {X=xx; Y=yy; countP++; }
Point(Point &p);
int GetX() {return X;}
int GetY() {return Y;}
void GetC() {cout<<" Object id="<<countP<<endl;}
private:
int X,Y;
//<2F><>̬<EFBFBD><CCAC><EFBFBD>ݳ<EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ⲿ<EFBFBD><E2B2BF><EFBFBD><EFBFBD><EFBFBD>ͳ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD>ӳ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>
static int countP;
};
Point::Point(Point &p)
{ X=p.X;
Y=p.Y;
countP++;
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ⶨ<EFBFBD><E2B6A8><EFBFBD>ͳ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(::)<29><>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ࡣ
int Point::countP=0;
int main()
{ Point A(4,5);
cout<<"Point A,"<<A.GetX()<<","<<A.GetY();
A.GetC();
Point B(A);
cout<<"Point B,"<<B.GetX()<<","<<B.GetY();
B.GetC();
system("pause");
return 0;
}