SmallCalculatorC#

using System;
using System.Diagnostics;
using System.Threading;

namespace ConsoleApp1
{
    class Program
    {
        static void Plus(int num1,int num2)
        {
            Console.Write("Result =");
            Console.Write(num1 + num2);
            Console.Write("\n");
        }
        static void Minuc(int num1, int num2)
        {
            Console.Write("Result =");
            Console.Write(num1 - num2);
            Console.Write("\n");
        }
        static void Mnosh(int num1, int num2)
        {
            Console.Write("Result =");
            Console.Write(num1 * num2);
            Console.Write("\n");
        }
        static void Delenie(int num1,int num2)
        {
            Console.Write("Result =");
            Console.Write((float)((float)num1 / (float)num2));
            Console.Write("\n");
        }
        static void Main()
        {
            int choice=0;
            int num1 = 0,num2 = 0;
            do
            {
                Console.WriteLine("\tMenu\n1) Plus\n2) Minuc\n3) *\n4) /\n5)Exit\nChoice =");
                choice=Convert.ToInt32(Console.ReadLine());
                switch(choice)
                {
                    case 1:
                        Console.Write("Enter num1:");
                        num1 = Convert.ToInt32(Console.ReadLine());
                        Console.Write("Enter num2:");
                        num2 = Convert.ToInt32(Console.ReadLine());
                        Plus(num1, num2);
                        break;

                    case 2:
                    Console.Write("Enter num1:");
                    num1 = Convert.ToInt32(Console.ReadLine());
                    Console.Write("Enter num2:");
                    num2 = Convert.ToInt32(Console.ReadLine());
                    Minuc(num1, num2);
                    break;

                    case 3:

                        Console.Write("Enter num1:");
                        num1 = Convert.ToInt32(Console.ReadLine());
                        Console.Write("Enter num2:");
                        num2 = Convert.ToInt32(Console.ReadLine());
                        Mnosh(num1, num2);
                        break;

                    case 4:
                        Console.Write("Enter num1:");
                        num1 = Convert.ToInt32(Console.ReadLine());
                        Console.Write("Enter num2:");
                        num2 = Convert.ToInt32(Console.ReadLine());
                        Delenie(num1, num2);
                        break;
                }
                if(choice==5)
                {
                    Console.Write("Bye");
                    break;
                }
            } while (choice != 5);
        }
    }
}