输入两个数相加相减相乘相除并显示结果
int a, b;
Console.Write("输入第一个整数:");
a = Convert.ToInt32(Console.ReadLine()); Console.Write("输入第二个整数:");
b = Convert.ToInt32(Console.ReadLine()); Console.WriteLine("相加为:{0} 相乘为:{1}", a + b, a * b); Console.WriteLine("相减为:{0} 相除为:{1}", a - b, a / b); 输入半径和高,程序求出圆锥的体积
int r,h;
Console.Write("请输入圆锥半径:");
r=Convert .ToInt32(Console .ReadLine()); Console.Write("请输入圆锥高:");
h=Convert.ToInt32(Console.ReadLine()); const double PI = 3.1415926;
Console.WriteLine("圆锥的面积为:{0}",(PI * r * r*h)/3); Console.ReadLine();
输入一个学生的多个信息,如姓名,年龄,性别,男、女,,C#课程成绩,并输出
string name;
int age;
char sex;
double g;
Console.Write("输入姓名:");
name = Console.ReadLine();
Console.Write("输入性别:");
sex = Convert.ToChar(Console.ReadLine()); Console.Write("输入年龄:");
age = Convert .ToInt32(Console.ReadLine()); Console.Write("输入C#课程成绩:");
g = Convert.ToDouble(Console.ReadLine()); Console.WriteLine("姓名:{0} 性别:{1} 年龄:{2} C#课程成绩:{3}",name,sex,age,g);
Console.ReadLine();
练习三元运算符。编写控制台应用程序,程序功能是:输出任意两数中较大的一个数。
int n1, n2, t;
Console.Write("请输入第一个数:");
n1 = Convert.ToInt32(Console.ReadLine()); Console.Write("请输入第二个数:");
n2 = Convert.ToInt32(Console.ReadLine());
t = n1 > n2 ? n1 : n2;
Console.WriteLine("较大的数是{0}",t);
Console.ReadLine();
double applePrice,bananaPrice,appleWeiget,bananaWeiget,total;
用户输入苹果和香蕉的重量,程序自动完成付款数。
Console.Write("请输入苹果重量(kg):");
appleWeiget = Convert.ToDouble(Console.ReadLine());
Console.Write("请输入香蕉重量(kg):");
bananaWeiget = Convert.ToDouble(Console.ReadLine());
applePrice = 3.5;
bananaPrice = 1.5;
total = applePrice * appleWeiget + bananaPrice * bananaWeiget;
Console.WriteLine("应付款为{0}", total);
Console.ReadLine();
第五章person类
青年老年中年类
using System;
using System.Collections.Generic; using System.Text;
namespace _0o
{class Person
{
public string Name;
public int Age;
public Person(string name, int age)
{
this.Name = name;
this.Age = age;
}
public void ShowName()
{
Console.WriteLine("姓名为:{0}", Name);
}
public void ShowAge()
{
Console.WriteLine("年龄为:{0}", Age);
}
public void Judge()
{
if (Age >= 10 && Age <= 17)
{
Console.WriteLine("少年");
}
else if (Age <= 34)
{ Console.WriteLine("青年"); }
else if (Age <= 59)
{ Console.WriteLine("中年"); }
else if (Age >= 60)
{ Console.WriteLine("老年"); }
}
}
class Program
{
static void Main(string[] args)
{
Person p = new Person("张红", 32);
p.ShowName();
p.ShowAge();
p.Judge();
Console.ReadLine();
}
}
}
工资类,输出工资
using System;
using System.Collections.Generic; using System.Text;
namespace _11
{
class Program
{
public class Employee
{
private string _Name;
public string Name
{
get { return _Name; }
set { _Name = value; }
}
private int _Age;
public int Age
{
get { return _Age; }
set { _Age = value; }
}
private string _Sex;
public string Sex
{
get { return _Sex; }
set { _Sex = value; }
}
private double _Salary;
public double Salary
{
get { return _Salary; }
set { _Salary = value; }
}
public void Addsalary(double salary)
{
if (salary < 800)
salary = 800;
else
salary = salary + salary * 0.1;
Console.WriteLine("增加的薪水为:{0}", salary);
}
public void ShowSalary(double salary)
{
Console.WriteLine("职员薪水:{0}", salary);
}
}
static void Main(string[] args)
{
{
Employee s1 = new Employee();
s1.Name = "zhanghua";
s1.Age = 32;
s1.Sex = "男";
s1.Addsalary(1200);
s1.ShowSalary(1600);
Console.ReadKey();
}
}
}
}
学生类
姓名性别出生日期
using System;
using System.Collections.Generic; using System.Text;
namespace ConsoleApplication3 {
public class Student
{
private string _Name;
public string Name
{
get { return _Name;}
set { _Name = value;}
}
private string _Sex;
public string Sex
{
get { return _Sex; }
set { _Sex = value; }
}
public DateTime _Birth;
public Student(string name,string sex,DateTime birth)
{
this ._Name=name;
this ._Birth=birth;
this ._Sex=sex;
}
public void Study(string courseName)
{
Console .WriteLine("我正在学习课程的名称:{0}",courseName);
}
public void Sing(string musicName)
{
Console .WriteLine("我正在演唱的歌曲:{0}",musicName);
}
}
class Program
{
static void Main(string[] args)
{
Student stu_new = new Student("张艺璇","女",Convert.ToDateTime("1993-06-06"));
Console.WriteLine("Stu_new对象的学生姓名为:{0},性别为:{1},出生日期为:{2}。",stu_new.Name,stu_new.Sex,stu_new._Birth);
stu_new.Study("C#程序设计");
stu_new.Sing("成长。 ");
Console.ReadLine();
}
}
}
学号姓名年龄
using System;
using System.Collections.Generic; using System.Text;
namespace ConsoleApplication1 {
public class Student
{
private string _Id;
public string Id
{
get { return _Id; }
set { _Id = value; }
}
private string _Name;
public string Name
{
get { return _Name; }
set { _Name = value; }
}
private string _Sex;
public string Sex
{
get { return _Sex; }
set
{
if (value == "男" || value == "女")
_Sex = value;
else
Console.WriteLine("你输入的性别不符合要求");
}
}
private int _Age;
public int Age
{
get { return _Age; }
set
{
if (value >= 15 && value <= 20)
_Age = value;
else
Console.WriteLine("你输入的年龄不符合要求");
}
}
public Student(string id, string name, string sex, int age)
{
this._Id = id;
this._Name = name;
this._Sex = sex;
this._Age = age;
}
}
class Program
{
static void Main(string[] args)
{
Student Stu_new = new Student("201015060014", "张三", "男", 19);
Console.WriteLine("学生学号为:{0},姓名为:{1},性别为:{2},年龄为:{3}", Stu_new.Id, Stu_new.Name, Stu_new.Sex, Stu_new.Age);
Console.ReadLine();
}
}
}
异常处理
using System;
using System.Collections.Generic;
using System.Text;
namespace t2
{
class Program
static void Main(string[] args)
{
try
{int a, b;
string op;
Console.WriteLine("请输入a的值:");
a = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("请输入b的值:");
b = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("请输入操作符号:");
op=Console.ReadLine();
switch (op)
{
case"+":
Console.WriteLine("a+b={0}", a + b);
break;
case"-":
Console.WriteLine("a-b={0}", a - b);
break;
case"*":
Console.WriteLine("a*b={0}", a * b);
break;
case"/":
Console.WriteLine("a/b={0}", a / b);
break;
default:
Console.WriteLine("抱歉您输入的操作符有误~");
break;
}
Console.ReadLine();
}
catch (ArithmeticException ex)
{
Console.WriteLine(ex.Message);
Console.ReadKey();
}
}
}
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