题目1

【问题描述】

利息存款问题

存款类型和利率分别如下：

活期 0.35% 一年 3.25% 两年3.75% 三年4.25% 五年4.75%

编写程序账户类，包括编号，姓名 ，本金，存储类型，以及利率等信息，能够计算账户存款到期的利息值并显示。

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#include  <string>
#include<iostream>
using  namespace  std;
class  Account
{
        public:
                Account();

//此区域编写

   private:
                string  mID,mName;
                int  mMoneyCapital;//    本金
                int  mDepositType;    //存款类型
                float  mLife;      //简化处理输入以年为单位
                static  float  InterestRate[5];//利率
                float  mInerest;//利息
};

//此区域编写

int  main()
{
        
        Account  a1("1001","zhang3",10000,1,0.8);
        Account  a2("1002","li4",2000,2,1);
        cout<<a1.getInterst();
        cout<<a2.getInterst();
}

【代码】

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#include <string>
#include<iostream>
using namespace std;
class Account
{
    public:
        Account();
        Account(string ID, string Name, int MoneyCapital, int DepositType, double Life)
                  {
                      this->mID = ID;
                      this->mName = Name;
                      this->mMoneyCapital = MoneyCapital;
                      this->mDepositType = DepositType;
                      this->mLife = Life;
                  }
               double getInterst()
               {
                  return mMoneyCapital * InterestRate[mDepositType] * mLife;
               }
    private:
                 string  mID,mName;
                int  mMoneyCapital;//    本金
                int  mDepositType;    //存款类型
                float  mLife;      //简化处理输入以年为单位
                static  float  InterestRate[5];//利率
                float  mInerest;//利息
};
 float  Account::InterestRate[5]= {0,0.0035,0.0325,0.0375,0.0425 };
Account::Account()
{};
int main()
{
    
    Account a1("1001","zhang3",10000,1,0.8);
    Account a2("1002","li4",2000,2,1);
    cout<<a1.getInterst();
    cout<<a2.getInterst();
}


题目2

【问题描述】

编写链表实现插入和删除等操作

【样例输入输出】

请输入学生姓名：
zhang
wang
li
zhao
sun
qian
学生信息为：
2018001 li
2018002 wang
2018003 zhang
2018004 zhao
2018005 sun
2018006 qian
请输入要删除的学生学号：
2018004
学生信息为：
2018001 li
2018002 wang
2018003 zhang
2018005 sun
2018006 qian
请输入要插入的学生学号和姓名：
2018004 han
学生信息为：
2018001 li
2018002 wang
2018003 zhang
2018004 han
2018005 sun
2018006 qian

【评分标准】

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#include  <iostream>
#include  <string>
using  namespace  std;
class  Node
{
public:
        Node(int  id,  string  name);              //定义编号和姓名
        void  showMessage();                            //输出数据
        
        
            //此区域编写
            //把Linklist作为自己的友元类


protected:
        int  mId;                                                    //编号
        string  mName;                                        //姓名
        Node  *next;                                              //指针指向下一个
};
Node::Node(int  id,  string  name)                                      //接受编号和姓名
{
        this->mId  =  id;
        this->mName  =  name;
        this->next  =  NULL;
}

void  Node::showMessage()                                                    //输出数据  
{
        cout  <<  this->mId  <<  "  "  <<  this->mName  <<  endl;
}
class  LinkList
{
public:
        
//此区域编写

protected:
        Node  *head;                                                                  //指针指向头
};

//此区域编写

int  main()
{
        int  ID;
        LinkList  list1;
        string  name;
        cout  <<  "请输入学生姓名："  <<  endl;
        for  (int  i  =  2018003;  i  >=  2018001;  i--)            //依次输入名字
        {
                cin  >>  name;
                list1.addNodeAtHead(i,name);
        }
        for  (int  i  =  2018004;  i  <=  2018006;  i++)            //依次输入名字
        {
                cin  >>  name;
                list1.addNodeAtTail(i,name);
        }
        
        cout  <<"学生信息为："<<  endl;
        list1.print();
        cout  <<  "请输入要删除的学生学号："<<endl;
        cin  >>  ID;
        cout  <<  "学生信息为："  <<  endl;
        list1.deleteNode(ID);
        list1.print();
        cout  <<  "请输入要插入的学生学号和姓名："<<endl;
        cin  >>  ID  >>name;
        cout  <<  "学生信息为："  <<  endl;
        list1.insertNode(ID,  name);
        list1.print();
        return  0;
}

【代码】

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#include  <iostream>
#include  <string>
using  namespace  std;
class  Node
{
public:
        Node(int  id,  string  name);              //定义编号和姓名
        void  showMessage();                            //输出数据
        
friend class LinkList;
                    //把Linklist作为自己的友元类
protected:
        int  mId;                                                    //编号
        string  mName;                                        //姓名
        Node  *next;                                              //指针指向下一个
};
Node::Node(int  id,  string  name)                                      //接受编号和姓名
{
        this->mId  =  id;
        this->mName  =  name;
        this->next  =  NULL;
}

void  Node::showMessage()                                                    //输出数据  
{
        cout  <<  this->mId  <<  "  "  <<  this->mName  <<  endl;
}
class  LinkList
{
public:
        
 LinkList();
    ~LinkList();
    void addNodeAtHead(int i, string name);
    void addNodeAtTail(int i, string name);
    void print();
    void deleteNode(int ID);
    void insertNode(int ID, string name);
    int getLenght();


protected:
        Node  *head;                                                                  //指针指向头
};
//构造函数
LinkList::LinkList()
{
    head = new Node(0, "");
    head->next = NULL;
}
//析构函数
LinkList::~LinkList() { delete head; }
//头插法
void LinkList::addNodeAtHead(int i, string name)
{
    Node* List = new Node(i, name);
    if (head->next == NULL)
    {
        head->next = List;
    }
    else
    {
        List->next = head->next;
        head->next = List;

    }
}
//尾插法
void LinkList::addNodeAtTail(int i, string name)
{
    Node* List = new Node(i, name);
    if (head->next == NULL)
    {
        head->next = List;
    }
    else
    {
        Node* p = head->next;
        while (p->next != NULL)
        {
            p = p->next;
        }
        p->next = List;
    }
}
//打印链表
void LinkList::print()
{
    Node* p = head->next;
    while (p != NULL)
    {
        p->showMessage();
        p = p->next;
    }
    delete p;

}
//删除一个节点
void LinkList::deleteNode(int ID)
{
    Node* temp = head;
    while (temp->next != NULL)
    {
        if (temp->next->mId == ID)
        {
            temp->next = temp->next->next;
            break;
        }
        temp = temp->next;
    }
}
//返回链表的长度
int LinkList::getLenght()
{
    Node* p = head->next;
    int count = 0;
    while (p != NULL)
    {
        count++;
        p = p->next;
    }
    return count;
}
//插入一个节点
void LinkList::insertNode(int ID, string name)
{
    int n;
    Node* p1 = head->next;
    while (p1->next != NULL)                         //学号相同的无法插入
    {
        if (p1->mId == ID)
            return;
        p1 = p1->next;
    }
    if (p1->mId == ID)
        return;
    if (head->next == NULL)                         //当只有头节点时；用头插法
    {
        addNodeAtHead(ID, name);
    }
    else
    {

        n = ID - head->next->mId;
        Node* p = head;
        if (n > getLenght())                      //当学号大于最后一个结点的学号时，应插在最后面，用尾插法
        {
            addNodeAtTail(ID, name);
        }
        else if (n < 0)                              //当学号小于第一个非头结点的学号时，应插在头结点的后面，用头插法
        {
            addNodeAtHead(ID, name);
        }
        else                                      //插在中间时
        {
            while (n > 0)
            {
                p = p->next;
                n--;
            }
            Node* node = new Node(ID, name);

            node->next = p->next;
            p->next = node;
        }
    }

}



int  main()
{
        int  ID;
        LinkList  list1;
        string  name;
        cout  <<  "请输入学生姓名："  <<  endl;
        for  (int  i  =  2018003;  i  >=  2018001;  i--)            //依次输入名字
        {
                cin  >>  name;
                list1.addNodeAtHead(i,name);
        }
        for  (int  i  =  2018004;  i  <=  2018006;  i++)            //依次输入名字
        {
                cin  >>  name;
                list1.addNodeAtTail(i,name);
        }
        
        cout  <<"学生信息为："<<  endl;
        list1.print();
        cout  <<  "请输入要删除的学生学号："<<endl;
        cin  >>  ID;
        cout  <<  "学生信息为："  <<  endl;
        list1.deleteNode(ID);
        list1.print();
        cout  <<  "请输入要插入的学生学号和姓名："<<endl;
        cin  >>  ID  >>name;
        cout  <<  "学生信息为："  <<  endl;
        list1.insertNode(ID,  name);
        list1.print();
        return  0;
}

题目3

【问题描述】

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#include  <string>
#include<iostream>
using  namespace  std;
class  Goods
{
        public:
                Goods(string  id,string  name,float  inprice,float  outprice,int  num);

        //此区域编写

  void  buy(int  num)
                {
                        this->mNum+=num;
                }
                string  GetId()  {  return  mId;  }
                void  SetId(string  val)  {  mId  =  val;  }
                string  GetName()  {  return  mName;  }
                void  SetName(string  val)  {  mName  =  val;  }
                static  float  Getsum()    {  return  sum;  }
                static  float  getProfit()  {return  profit;}
        private:
                string  mId;
                string  mName;
                float  mInPrice;
                float    mOutPrice;
                int  mNum;

        //此区域编写

};

        //此区域编写

int  main()
{      Goods  gd[100];
        gd[0]=Goods("1001","白菜",0.8,1.5,500);
        gd[1]=Goods("1002","萝卜",1.5,2.1,500);
        gd[0].sell(10);
        gd[1].sell(20);
        gd[0].sell(5);
        cout<<gd[0].Getsum()<<endl;
        cout<<gd[1].Getsum()<<endl;
        cout<<gd[0].getProfit()<<endl;
        return  0;
}

【代码】

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#include <string>
#include<iostream>
using namespace std;
class Goods
{
    public:
        Goods(string id,string name,float inprice,float outprice,int num);
       Goods();
                      void sell(int sales);
                      float getInPrice()
                      {
                          return this->mInPrice;
                      }
                      float getOutPrice()
                      {
                          return this->mOutPrice;
                      }
        void buy(int num)
        {
            this->mNum+=num;
        }
        string GetId() { return mId; }
        void SetId(string val) { mId = val; }
        string GetName() { return mName; }
        void SetName(string val) { mName = val; }
        static float Getsum()  { return sum; }
        static float getProfit() {return profit;}
    private:
        string mId;
        string mName;
        float mInPrice;
        float  mOutPrice;
        int mNum;
       static float profit;
                  static float sum;;
};
float Goods::profit = 0;
float Goods::sum = 0;
Goods::Goods(string  id, string  name, float  inprice, float  outprice, int  num)
{
  this->mId = id;
  this->mName = name;
  this->mInPrice = inprice;
  this->mOutPrice = outprice;
  this->mNum = num;
}
Goods::Goods()
{
}
void Goods::sell(int sales)
{
  this->sum += this->getOutPrice() * sales;
  this->profit += (this->getOutPrice() - this->getInPrice()) * sales;
}
int main()
{   Goods gd[100];
    gd[0]=Goods("1001","鐧借彍",0.8,1.5,500);
    gd[1]=Goods("1002","钀濆崪",1.5,2.1,500);
    gd[0].sell(10);
    gd[1].sell(20);
    gd[0].sell(5);
    cout<<gd[0].Getsum()<<endl;
    cout<<gd[1].Getsum()<<endl;
    cout<<gd[0].getProfit()<<endl;
    return 0;
}


代码可能略有不足，请大佬多多指教