課后習題整理

1、(1)設計一個Car類，他的數(shù)據(jù)成員要能描述一輛汽車的品牌、型號、出廠年份和價格，成員函數(shù)包括提供合適的途徑來訪問數(shù)據(jù)成員，在main（）函數(shù)中定義類的對象并調用相應的成員函數(shù)#include<iostream>#include<string>using namespace std;class Carprivate:string Pingpai;string Xinghao;int Year;int Price;public:void set() cout<<"shu ru xiang guan xin xi"<<endl;

2、cout<<"pingpai:" cin>>Pingpai; cout<<"xinghao:" cin>>Xinghao; cout<<"chuchangnianfen:" cin>>Year; cout<<"jiage:" cin>>Price;void show() cout<<"pingpai:"<<Pingpai<<endl; cout<<&qu

3、ot;xinghao:"<<Xinghao<<endl; cout<<"chuchangnianfen:"<<Year<<endl; cout<<"jiage:"<<Price<<endl;int main()Car car;car.set ();car.show ();return 0;(2)設計一個學生類Student，擁有的數(shù)據(jù)成員是學號、姓名、電話號碼、所屬院系，成員函數(shù)包括訪問和修改這些屬性，在main（）中定義對象，并輸出相關信息#inc

4、lude <iostream>#include <string>using namespace std;class Student /學號、姓名、電話號碼、所屬院系，成員函數(shù)包括訪問和修改這些屬性private: string xuehao; string name; string tel; string department;public: Student(string x,string n,string t,string d) xuehao=x; name=n; tel=t; department=d; void change(string x,string n,s

5、tring t,string d)/修改屬性 xuehao=x; name=n; tel=t; department=d; void display() cout<<"xuehao="<<xuehao<<endl; cout<<"name="<<name<<endl; cout<<"tel="<<tel<<endl; cout<<"department="<<department<

6、;<endl; ;int main() string a,b,c,d; cin>>a; cin>>b; cin>>c; cin>>d; Student s(a,b,c,d); s.display(); return 0;(3)設計一個學生類，包含學生呢個姓名、成績（char *name;double score）,設計一個友元函數(shù)，比較學生成績的高低，并求出下一組學生：Stu("zhang"),78,Stu("wang",80),Stu("li",65),Stu("che

7、n",50)中的最高分和最低分#include<iostream>#include<string>using namespace std;class studentprivate:char *name;double score;public:student()student(char *na,double sc)name=na;score=sc;friend void order(student s); void order(student s) student tmp; int i,j; for(j=0;j<3;j+) for(i=0;i<3-j

8、;i+) if(si.score<si+1.score) tmp=si; si=si+1; si+1=tmp; cout<<"分數(shù)由高到低排列：" for(i=0;i<4;i+) cout<<<<" "<<si.score<<endl; cout<<"最高分："<<<<" "<<s0.score<<endl; cout<<"最低分：&q

9、uot;<<<<" "<<s3.score<<endl;int main() student s4=student("zhang",78),student("wang",80),student("li",92),student("chen",50); order(s);(4)編寫程序，定義機動車類Vehicle，包括的數(shù)據(jù)成員有出廠日期和售價并定義成員函數(shù)可以設置這些數(shù)據(jù)成員，再定義print（）然后定義car類，增加乘客數(shù)量，tru

10、ck類增加載重噸數(shù).#include<iostream>#include<string>using namespace std;class Vehicleprivate:int year,month,day;int price;public:Vehicle()cout<<"please input date: " cout<<"year"<<","<<"month"<<","<<"day&q

11、uot;<<","<<endl;cin>>year;cin>>month;cin>>day;cout<<"please input price:"cin>>price;cout<<"Vehicle"<<endl; virtual void print1() cout<<"date:"<<year<<","<<month<<&quo

12、t;,"<<day<<","<<endl; cout<<"price:"<<price<<endl;class Car:public Vehiclepublic:int amount;Car()cout<<"please input amount of passager: "cin>>amount;cout<<"car"<<endl; void print2() print1(); co

13、ut<<"amount:"<<amount<<endl;class Truck:public Vehiclepublic:int ton;Truck()cout<<"please input ton:"cin>>ton;cout<<"truck"<<endl;void print3() print1(); cout<<"ton:"<<ton<<endl;int main()Vehicle V1;V

14、1.print1();Car C1;C1.print2();Truck T1;T1.print3();return 0;(7-4)完整定義字符串類string，使用動態(tài)分配內存機制實現(xiàn)字符串存儲，定義構造函數(shù)，析構函數(shù)，重載運算符“=”,"+",“+=”實現(xiàn)兩個字符串的賦值，連接等功能。#include<iostream>#include<string>using namespace std;class Stringpublic: String(); String(char *t); String(String &t); String();

15、String operator=(String t); String operator+( String t); String operator +=(String t); void Show() cout<<p<<endl; private: char *p;String:String() p = new char1; *p = '0'String:String(char *t) p = new charstrlen(t)+1; strcpy(p,t);String:String(String &t) p = new charstrlen(t.

16、p)+1; strcpy(p,t.p);String String:operator +(String t) char *pt; pt = new charstrlen(p)+strlen(t.p)+1; strcpy(pt,p); strcat(pt,t.p); String temp(pt); deletept; return temp;String String:operator +=(String t)char *i;i=new charstrlen(p)+1;strcpy(i,p);delete p;p=new charstrlen(t.p)+strlen(p)+1;strcpy(p

17、,i);strcat(p,t.p);return *this;String:String() deletep;String String:operator =(String t) if(this = &t) return *this; deletep; p = new charstrlen(t.p)+1; strcpy(p,t.p); return *this;void main() String s1("hello！"); String s2("when."); String s3;s3=s2+s1;s3+=s2;s2=s1;s3.Show()

18、;s2.Show();(8-4)根據(jù)程序定義一個求3個數(shù)之間最大值的函數(shù)模板max。#include<iostream.h>#include<string.h>template<typename T>T max(T a,T b,T c)return (a>b?a:b)>c?(a>b?a:b):c;int main()cout<<max(11,29,22)<<endl;cout<<max(3.14f,28.3f,6.7f)<<endl;cout<<max('c',&#

19、39;b','a')<<endl;return 0;（5）有一個學生類student,包括學生姓名、成績，設計一個友元函數(shù)，輸出成績對應的等級：大于等于90：優(yōu)；8090：良；7079：中；60!69：及格；小于60：不及格。#include<iostream.h> #include<string.h> class student char name10; int deg; public: student(char na,int d) strcpy(name,na); deg=d; friend void trans(student

20、&s) if(s.deg>=90) cout<<<<" "<<s.deg<<" "<<"優(yōu)"<<endl; else if(s.deg>=80) cout<<<<" "<<s.deg<<" "<<"良"<<endl; else if(s.deg>=70) cout<<s.n

21、ame<<" "<<s.deg<<" "<<"中"<<endl; else if(s.deg>=60) cout<<<<" "<<s.deg<<" "<<"及格"<<endl; else cout<<<<" "<<s.deg<<" &quo

22、t;<<"不及格"<<endl; ; void main() student st=student("王華",78),student("李明",92),student("張偉",62),student("孫強",88); cout<<"輸出結果："<<endl; cout<<"姓名"<<" "<<"成績"<<"

23、"<<"等級"<<endl; for(int i=0;i<4;i+) trans(sti); (6)編寫一個程序，設計一個Point類，包括學號、姓名和成績等私有數(shù)據(jù)成員，不含任何成員函數(shù)，只將main()設置為該類的友元函數(shù)。#include<iostream.h>class point int no; char name10; int deg; public: friend void main();void main() point p; cout<<"輸入學號:" cin>>

24、;p.no; cout<<"姓名：" cin>>; cout<<"成績：" cin>>p.deg; cout<<"輸出結果"<<endl; cout<<"學生:"<<<<endl; cout<<"學號:"<<p.no<<endl; cout<<"成績?yōu)?"<<p.deg<<e

25、ndl;(7) 創(chuàng)建一個學生類,包括學號和成績,編程輸入和顯示學生信息,建立一個人類,包括姓名,性別,年齡,并作為學生的基類. #include<iostream.h>class Person char name10; char sex; int age;public: void input() cout<<"請輸入姓名:" cin>>name; cout<<"請輸入性別:" cin>>sex; cout<<"請輸入年齡:" cin>>age; voi

26、d display() cout<<"姓名:"<<name<<",性別:"<<sex<<",年齡:"<<age<<endl; ;class Student:public Person char sno10; int score;public: void input() Person:input(); cout<<"請輸入學號:" cin>>sno; cout<<"請輸入成績:"

27、 cin>>score; void display() Person:display(); cout<<"學號;"<<sno<<",成績:"<<score<<endl; ;void main() Student s1; s1.input(); s1.display();(8)按要求編程：某學校教授和講師的月工資計算辦法規(guī)定如下：教授每月固定工資為4000元。講師每月工資與講課學時數(shù)有關，計算方法是每學時50元，另加補助1000元。編程顯示某個教員的月工資數(shù)目。#include <

28、;iostream.h>class Teacherpublic:virtual int Salary()=0;virtual void Print(int)=0;class Professor:public Teacherprivate:char name20;int lessons;public:Professor()cout<<"請輸入姓名："cin>>name; /字符串中不能有空格int Salary()return 4000;void Print(int money)cout<<"職稱：教授 姓名："&

29、lt;<name<<" 薪水："<<money<<endl<<endl;class Lecturer:public Teacherprivate:char name20;int lessons;public:Lecturer()cout<<"請輸入姓名："cin>>name;cout<<"請輸入課時："cin>>lessons;int Salary()return (1000+lessons*50);void Print(int mo

30、ney)cout<<"職稱：講師 姓名："<<name<<"薪水："<<money<<endl<<endl;void main()int money=0;Professor t;money = t.Salary();t.Print(money);Lecturer l;money = l.Salary();l.Print(money);(9)1.給定一個int型數(shù)n，編程實現(xiàn)按不同進制輸出，包括十進制數(shù)、八進制數(shù)、十六進制數(shù)。要求使用純虛函數(shù)print（）。十進制數(shù) （dec） 十六進制數(shù)（hex）八進制數(shù)（oct）#include<iostream.h>#include<m