C#控制台程序的开发与打包为一个exe文件实例详解

float num1 = 0; float num2 = 0;

Console.WriteLine(" C# 控制台计算器\r");
Console.WriteLine("------------------------\n");

Console.WriteLine("请输入一个数字，然后回车");
num1 = Convert.ToInt32(Console.ReadLine());

Console.WriteLine("请输入另一个数字，然后回车");
num2 = Convert.ToInt32(Console.ReadLine());

Console.WriteLine("从下面的列表里选择一个选项:");
Console.WriteLine("\ta - 加");
Console.WriteLine("\ts - 减");
Console.WriteLine("\tm - 乘");
Console.WriteLine("\td - 除");
Console.Write("你的选择是? ");

switch (Console.ReadLine())
{
    case "a":
        Console.WriteLine($"结果: {num1} + {num2} = " + (num1 + num2));
        break;
    case "s":
        Console.WriteLine($"结果: {num1} - {num2} = " + (num1 - num2));
        break;
    case "m":
        Console.WriteLine($"结果: {num1} * {num2} = " + (num1 * num2));
        break;
    case "d":
        Console.WriteLine($"结果: {num1} / {num2} = " + (num1 / num2));
        break;
}

Console.Write("按下任意键退出...");
Console.ReadKey();