Visual Studio 中的 C# 脚本突然中途停止而没有错误

Question

我正在尝试制作一个基本的计算器来练习我的 C# 技能。我昨天开始学习语言。我试过运行调试器，但什么也没有出现。该脚本总是在同一位置关闭，如下所示。这是我的脚本:

static void Main(string[] args)
{
    string cType; //Type of calculus to be selected
    int num01; //First input number
    int num02; //Second input number
    int result; //Function of num01 and num02
    
    Console.WriteLine("Please select the type of calculus you wish to perform." +
        "These are:\nM - Multiplication\nD - Division\nS - Subtraction\nA - Addition");
    //Informing the user of calculus type they can select

    cType = Console.ReadLine();
    //Setting the string cType as what the user inputs

    if (cType == "M")
    //Detecting if the input is M to start multiplication script
    {
        Console.WriteLine("You have selected multiplication");
        Console.Write("Please enter the first number: ");
        num01 = Console.Read();
        //Assign first number to string num01

        // THE SCRIPT STOPS WORKING HERE

        Console.Write("Please enter the second number: ");
        num02 = Console.Read();
        //Assign second number to string num02

        result = num01 * num02;
        //Calculate result

        Console.Write("{0} * {1} = {2}", num01, num02, result);
        //Output result as full sentence
    }
}

Answer 1

您应该改用 .ReadLine()，然后尝试将其转换为整数。

if(!int.TryParse(Console.ReadLine(), out int num01)) {
    Console.WriteLine("Input was not an integer. Please try again");
    //retry logic
}

//num01 is now the integer value of the input

您可以删除顶部的 num01 赋值，因为不需要事先定义它。