C#第七章课后题答案.pdf

using System; using System.Collections.Generic; using System.Text; namespace Proj7_15 public class Employee/普通职工类 private double bsalary= 1000;/基本工资 private double psalary;/实际工资 private int n;/工作年数 public int pn get return n; set n = value; public double compsalary()/计算普通员工工资 Console.Write(“工作年数:“); pn = int.Parse(Console.ReadLine(); psalary = bsalary+30*pn; return psalary; public class UEmployee : Employee/本科生职工类 new public double compsalary() return 1.5 * psalary(); class Program static void Main(string args) Employee emp1 = new Employee(); Console.WriteLine(“该普通职工工资:0“, psalary(); UEmployee emp2 = new UEmployee(); Console.WriteLine(“该本科生职工工资:0“, psalary(); using System; using System.Collections.Generic; using System.Text; namespace Proj7_16 public class Employee/普通职工类 private double bsalary = 1000;/基本工资 private double psalary;/实际工资 private int n;/工作年数 public int pn get return n; set n = value; public virtual double compsalary()/计算普通员工工资 Console.Write(“工作年数:“); pn = int.Parse(Console.ReadLine(); psalary = bsalary + 30 * pn; return psalary; public class UEmployee : Employee/本科生职工类 public override double compsalary() return 1.5 * psalary(); public class GEmployee : Employee/研究生职工类 public override double compsalary() return 2 * psalary(); class Program static void Main(string args) Employee emp1 = new Employee(); Console.WriteLine(“该普通职工工资:0“, psalary(); UEmployee emp2 = new UEmployee(); Console.WriteLine(“该本科生职工工资:0“, psalary(); GEmployee emp3 = new GEmployee(); Console.WriteLine(“该研究生职工工资:0“, psalary(); using System; using System.Collections.Generic; using System.Text; namespace Proj7_17 public class Person/人类 private int no;/编号 private string name;/姓名 public void input() Console.Write(“编号:“); no = int.Parse(Console.ReadLine(); Console.Write(“姓名:“); name = Console.ReadLine(); public void disp() Console.WriteLine(“编号:0“,no); Console.WriteLine(“姓名:0“,name); public class Student : Person/学生类 private string sclass;/班号 private int degree;/成绩 public void input() base.input(); Console.Write(“班号:“); sclass = Console.ReadLine(); Console.Write(“成绩:“); degree = int.Parse(Console.ReadLine(); new public void disp() base.disp(); Console.WriteLine(“班号:0“,sclass); Console.WriteLine(“成绩:0“,degree); public class Teacher : Person/教师类 private string prof;/职称 private string depart;/部门 public void input() base.input(); Console.Write(“职称:“); prof = Console.ReadLine(); Console.Write(“部门:“); depart = Console.ReadLine(); new public void disp() base.disp(); Console.WriteLine(“职称:0“, prof); Console.WriteLine(“部门:0“, depart); class Program static void Main(string args) Student s1 = new Student(); Teacher t1 = new Teacher(); Console.WriteLine(“输入一个学生数据:“); s1.input(); Console.WriteLine(“输入一个教师数据:“); t1.input(); Console.WriteLine(“显示一个学生数据:“); s1.disp(); Console.WriteLine(“显示一个教师数据:“); t1.disp(); using System; using System.Collections; using System.Collections.Generic; using System.Text; namespace Proj7_18 public class Student:IComparable private string name; private int eng, math, sum; public int psum get return sum; public void inscore() Console.Write(“姓名:“); name = Console.ReadLine(); Console.Write(“英语:“); eng = int.Parse(Console.ReadLine(); Console.Write(“数学:“); math = int.Parse(Console.ReadLine(); sum = eng + math; public void display() Console.WriteLine(“t0t1t2t3“, name, eng, math, sum); public int CompareTo(object obj)/实现接口方法 Student s = (Student)obj;/转换为Student实例 if (psum s.psum) return 1; else if (psum = s.psum) return 0; else return -1; class Program static void Main(string args) int n, i; ArrayList myarr = new ArrayList(); Student p;/定义对象引用 Console.Write(“n:“); n = int.Parse(Console.ReadLine(); for (i = 0; i n; i+) Console.WriteLine(“输入第0个学生数据:“, i + 1); p = new Student();/创建对象引用实例 p.inscore(); myarr.Add(p); Console.WriteLine(“排序前:“); Console.WriteLine(“t姓名t英语t数学t总分“); i = 1; foreach(Student s in myarr) Console.Write(“序号0:“, i+); s.display(); myarr.Sort();/按总分降序排序 Console.WriteLine(“排序后:“); Console.WriteLine(“t姓名t英语t数学t总分“); i = 1; foreach (Student s in myarr) Console.Write(“第0名:“, i+); s.display(); using System; using System.Collections.Generic; using System.Text; namespace Proj7_19 public class BClass/基类 private string name;/名称 private int no;/编号 public BClass(string na, int n)/构造函数 name = na; no = n; public void show() Console.Write(“0(1)“, name, no); public class Book : BClass/图书类 string author;/作者 public Book(string na, int n, string auth) : base(na, n) author = auth; public void showBook() base.show(); Console.Write(“作者:0“, author); public class Reader : BClass/读者类 Book rent;/所借图书 int top; public Reader(string na, int n) : base(na, n)/构造函数 rent = new Book5; top = 0; public void rentBook(ref Book b) renttop = b; top+; public void showReader() Console.Write(“读者:“); base.show(); Console.WriteLine(“所借图书:“); for (int i = 0; i top; i+) Console.Write(“0:“, i + 1);/5个空格 renti.show(); Console.WriteLine(); class Program static void Main(string args) Book b1 = new Book(“C语言“, 100, “潭浩强“); Book b2 = new Book(“数据结构“, 110, “严蔚敏“); Bo