1.Zadatak uspeh

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        enum Uspeh { nedovoljan=1, dovoljan, dobar, vrlo_dobar, odlican };
        static void Main(string[] args)
        {
            string s;
            int o;

            Console.WriteLine("Unesi uspeh:");
            s = Console.ReadLine();

       switch (s) {

            case "nedovoljan":
                Console.WriteLine("Ocena je: "+ Convert.ToInt32(Uspeh.nedovoljan));
                break;

            case "dovoljan":
                 Console.WriteLine("Ocena je: "+ Convert.ToInt32(Uspeh.dovoljan));
                 break;

            case "dobar":
                 Console.WriteLine("Ocena je: "+ Convert.ToInt32(Uspeh.dobar));
                break;

            case "vrlo_dobar":
                Console.WriteLine("Ocena je: "+ Convert.ToInt32(Uspeh.vrlo_dobar));
                break;

            case "odlican":
                Console.WriteLine("Ocena je: " + Convert.ToInt32(Uspeh.odlican));
                break;
            }

            Console.ReadLine();

        }
    }
}