C#怎么写 科学计算器的编码，要可以用+，-，*，/，%，平方，开方这些的哦

Answer 1

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

namespace shangJi
{
/// <summary>
/// 运算方法
/// </summary>
class CalcMethod
{
/// <summary>
/// 加法
/// </summary>
/// <param name="num1">参数一</param>
/// <param name="num2">参数二</param>
/// <returns>返回结果</returns>
public float Add(float num1, float num2)
{
return num1 + num2;
}
/// <summary>
/// 减法
/// </summary>
/// <param name="num1">参数一</param>
/// <param name="num2">参数二</param>
/// <returns>返回结果</returns>
public float Sub(float num1, float num2)
{
return num1 - num2;
}
/// <summary>
/// 乘法
/// </summary>
/// <param name="num1">参数一</param>
/// <param name="num2">参数二</param>
/// <returns>返回结果</returns>
public float Mul(float num1, float num2)
{
return num1 * num2;
}
/// <summary>
/// 除法
/// </summary>
/// <param name="num1">参数一</param>
/// <param name="num2">参数二</param>
/// <returns>结果</returns>
public float Division(float num1, float num2)
{
return num1 / num2;
}
/// <summary>
/// 选择计算方法
/// </summary>
/// <param name="num1">数值参数1</param>
/// <param name="num2">数值参数2</param>
/// <param name="symbol">运算符</param>
/// <returns></returns>
public void Clac(float num1, float num2, string symbol)
{
switch (symbol)
{
case "+":
Console.WriteLine(Add(num1, num2));
break;
case "-":
Console.WriteLine(Sub(num1, num2));
break;
case "*":
Console.WriteLine(Mul(num1, num2));
break;
case "/":
if (num2 != 0)
{
Console.WriteLine(Division(num1, num2));
}
else
{
Console.WriteLine("除数不能为0！！");
}
break;
default :
Console.WriteLine("没有该运算");
break;
}
}
}
}