C#第四次上机

（1）设有一个描述坐标点的CPoint类，其私有变量x和y代表一个点的x,y坐标值。编写程序实现以下功能：利用构造函数传递参数，并设其默认参数值为60和75，利用成员函数display()输出这一默认值；利用公有成员函数setpointQ将坐标值修改为（80,150），并利用成员函数输出修改后的坐标值

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace MyCs
{
class Program
{
static void Main(string[] args)
{
CPoint P1 = new CPoint();
Console.Write("调用无参构造函数：");
P1.display();
CPoint P2 = new CPoint(60, 75);
Console.Write("调用有参构造函数：");
P2.display();
P2.setpointQ(80, 150);
Console.Write("坐标值修改后：");
P2.display();
Console.ReadKey();
}
}
class CPoint
{
protected int x;
protected int y;
public CPoint()
{

}
public CPoint(int xx, int yy)
{
x = xx;
y = yy;
}

public void display()
{
Console.WriteLine("({0},{1})", x, y);
}

public void setpointQ(int x1, int y1)
{
x = x1;
y = y1;
}
}
}

（2）定义一个人员类CPerson,数据成员包括：姓名，编号，性别和用于输入输出的成员函数。在此基础上派生出学生类CStudent(增加成绩)和教师类CTeacher（增加教龄），并实现对学生和教师信息的输入/输出。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace CPP
{
class Program
{
static void Main(string[] args)
{
CStudent stu = new CStudent();
stu.Input();
stu.Output();
CTeacher tea = new CTeacher();
tea.Input();
tea.Output();
Console.ReadKey();
}
}

class CPerson
{
public string name;
public int num;
public string sex;
public CPerson()
{

}
public CPerson(string na, int n, string s)
{
name = na; num = n;
sex = s;
}

public void input()
{
Console.WriteLine("name,num,sex");
string[] str = Console.ReadLine().Split(' ');
name = str[0];
num = int.Parse(str[1]);
sex = str[2];
}

public void output()
{
Console.WriteLine("姓名： {0} ", name);
Console.WriteLine("编号： {0} ", num);
Console.WriteLine("性别： {0} ", sex);
}
}

class CStudent : CPerson
{
protected int grade;
public CStudent()
{

}
public CStudent(string na, int n, string s, int gr)
: base(na, n, s)
{
this.grade = gr;
}
public void Input()
{
base.input();
Console.WriteLine("grade");
string ss = Console.ReadLine();
int gr = int.Parse(ss);
grade = gr;
}
public void Output()
{

base.output();
Console.WriteLine("成绩： {0} ", grade);
}
}
class CTeacher : CPerson
{
protected int year;
public CTeacher()
{

}
public CTeacher(string na, int n, string s, int y)
: base(na, n, s)
{
this.year = y;
}
public void Input()
{
base.input();
Console.WriteLine("year");
string SS = Console.ReadLine();
int ye = int.Parse(SS);
year = ye;
}
public void Output()
{
base.output();
Console.WriteLine("教龄： {0} ", year);
}
}
}

(3)输入一个由若干字符组成的字符串，写一个静态方法，方法中使用输出参数输出其中的大写字母，小写字母，数字和其他字符的个数。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace CPP
{

class Program
{
static void Main(string[] args)
{
int daxie = 0;
int xiaoxie = 0;
int num = 0;
int other = 0;
string str = Console.ReadLine();
char[] ss = str.ToCharArray();
Test.GetNum(out  daxie, out xiaoxie, out num,out other,ss);
Console.WriteLine("该字符串中共有{0}个大写字母，{1}个小写字母，{2}个数字，{3}个其他字符", daxie, xiaoxie, num, other );

Console.ReadKey();
}

}
class Test
{
public static void  GetNum(out int daxie,out int xiaoxie,out int num,out int other ,params char [] ss)
{
daxie = 0;
xiaoxie = 0;
num = 0;
other = 0;
for(int i=0;i<ss.Length;i++)
{
if(ss[i]>='A'&& ss[i]<='Z')
{
daxie++;
}
else if(ss[i]>='a'&& ss[i]<='z')
{
xiaoxie++;
}
else if(ss[i]>='0'&& ss[i]<='9')
{
num++;
}
else
{
other++;
}
}
}
}

}