C#_switch语句，for循环，dowhile循环,while循环1:switch语句，代码如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication33
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("请输⼊分数：");
int score = int.Parse(Console.ReadLine());
Console.WriteLine("得分是：");
switch (score / 10)
{
case 10:
case 9:
Console.WriteLine("A");
break;
case 8:
Console.WriteLine("B");
break;
case 7:
Console.WriteLine("C");
break;
case 6:
Console.WriteLine("D");
break;
default:
Console.WriteLine("E");
break;
}
}
}
}
　运⾏结果：
2：for循环，代码如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication34
{
class Program
{
static void Main(string[] args)
{
int i;
int sum = 0;
for (i = 0; i <= 100; i++)
{
sum += i;
}
Console.WriteLine("最终结果是：{0}",sum);
}
}
}
　运算结果：
3：do while语句，代码如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication35
{
class Program
{
static void Main(string[] args)
{
int i = 0;
int sum = 0;
do
{
sum += i;
i++;
} while (i <= 100);
Console.WriteLine("最终结果是：{0}", sum);
}
}
}
  运⾏结果：
4：while循环，代码如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication36
{
class Program
{
static void Main(string[] args)
{
int i = 0;
int sum = 0;
while(i<=100)
{
sum += i;
i++;
}
Console.WriteLine("最终结果是：{0}", sum);
switch语句c语言例子}
}
}
  运⾏结果⼀样。
5：下⾯来⼀个综合的例⼦，为多名职员计算缴税⾦额。代码如下：using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication37
{
class Program
{
static void Main(string[] args)
{
decimal sal;
decimal salary;
decimal tax;
int count = 0;//记录处理数据个数
char ch;//记录⽤户输⼊的字符
do
{
Console.Write(++count);
Console.Write("请输⼊职员⼯资：");
salary = Convert.ToDecimal(Console.ReadLine());//输⼊职员⼯资
sal = salary - 3500;
if (sal <= 0m)
tax = 0m;//decimal类型要加后缀m
else if (sal <= 1500m)
tax = sal * 0.03m;
else if (sal <= 4500m)
tax = sal * 0.1m-105;
else if (sal <= 9000m)
tax = sal * 0.2m-555;
else if (sal <= 35000m)
tax = sal * 0.25m-1005;
else if (sal <= 55000m)
tax = sal * 0.3m-2755;
else if (sal <= 80000m)
tax = sal * 0.35m-5505;
else
tax = sal * 0.45m-13505;
Console.WriteLine("应交税⾦为：" + tax.ToString());
Console.Write("继续吗？");
ch = Convert.ToChar(Console.ReadLine());//⽤户输⼊字符
//若⽤户输⼊的是除⼤⼩写Y或⼤⼩写N以外的其他字符，则要求⽤户重新输⼊                while (ch != 'Y' && ch != 'y' && ch !='N' && ch != 'n')
{
Console.WriteLine("对不起！只允许⼤⼩写Y或⼤⼩写N！\n继续吗？");
ch = Convert.ToChar(Console.ReadLine());
}
}
while (ch == 'Y'||ch == 'y');
Console.WriteLine("谢谢使⽤！");
Console.ReadLine();
}
}
}
  运⾏结果：