Write a C# program that allows the user to choose the correct answer of a question.

See the example below:

What is the correct way to declare a variable to store an integer value in C#?
a. int 1x=10;
b. int x=10;
c. float x=10.0f;
d. string x="10";
Choose the answer letter: c
Incorrect choice!
Solution:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Csharp_exercises
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("What is the correct way to declare a variable to store an integer value in C#?");
Console.WriteLine("a. int 1x=10");
Console.WriteLine("b. int x=10");
Console.WriteLine("c. float x=10.0f");
Console.WriteLine("d. string x=\"10\"");
Console.WriteLine("Choose the answer letter:");
char ans = (char)Console.read();
switch (ans)
{
   case 'a':Console.WriteLine("Invalid choice!"); break;
   case 'b':Console.WriteLine("Congratulation!"); break;
  case 'c':Console.WriteLine("Invalid choice!"); break;
  case 'd':Console.WriteLine("Invalid choice!"); break;
  default:Console.WriteLine("Bad choice!");break;


       }


    }

   }

}