我正在尝试制作一个交互式文本游戏，但是当我尝试播放器输入时，它说（发生异常：CLR/System.FormatException）代码>>

Question

using System;

namespace Coding_basics
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Title = " To Infinity";
            Console.ForegroundColor = ConsoleColor.Green;
           int decision  = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Welcome");
            Console.ReadLine();
            Console.WriteLine("You have entered the program, press 1 to proceed or press 2 to leave");
            Console.ReadLine();
            if (decision == 1 )  { Console.WriteLine("Good luck...");
            } 

            if (decision == 2) { Environment.Exit(0);

            }
            Console.ReadKey();

I was expecting the text to come up and then be able to choose 1 or 2 to continue or close the game, please explain what I'm doing wrong. Thank you

Answer 1

You have too many Console.ReadLine() that are not needed, you also declare and read decision to early. You can try the below:

using System;

namespace Coding_basics
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Title = "To Infinity";
            Console.ForegroundColor = ConsoleColor.Green;

            Console.WriteLine("Welcome");
            Console.WriteLine("You have entered the program, press 1 to proceed or press 2 to leave");
            
            int decision  = Convert.ToInt32(Console.ReadLine());
            
            if (decision == 1 )
            {
                Console.WriteLine("Good luck...");
            }
            if (decision == 2)
            {
                Environment.Exit(0);
            }
            
            Console.ReadKey();
        }
    }   
}