HOA QUIZ

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

namespace HOA3_12Eva03AmadorJohnMichael
{
    class Program
    {
        static void Main(string[] args)
        {
            int choice = 0, score, hps, quiznum, nScore;
            List<int> iScores = new List<int>();
            List<int> iHps = new List<int>();
            while (choice == 0)
            {
                Console.WriteLine("----------------------");
                Console.WriteLine("1 - Add Quiz");
                Console.WriteLine("2 - View Quiz");
                Console.WriteLine("3 - Corrections");
                Console.WriteLine("4 - View All Quizzes");
                Console.WriteLine("5 - Exit");
                Console.WriteLine("----------------------");
                Console.Write("Enter choice: ");
                choice = int.Parse(Console.ReadLine());
                if (choice == 1)
                {
                    Console.WriteLine("NEW QUIZ");
                    Console.Write("Enter score: ");
                    score = int.Parse(Console.ReadLine());
                    iScores.Add(score);
                    Console.Write("Enter HPS: ");
                    hps = int.Parse(Console.ReadLine());
                    iHps.Add(hps);
                    Console.WriteLine("Quiz successfully added!");
                    choice = 0;
                }
                else if (choice == 2)
                {
                    Console.WriteLine("VIEW QUIZ");
                    Console.Write("Enter quiz no: ");
                    quiznum = int.Parse(Console.ReadLine());
                    if (quiznum <= iScores.Count)
                    {
                        Console.WriteLine("Score: " + iScores[quiznum - 1] + "\t" + "HPS: " + iHps[quiznum - 1]);
                        choice = 0;
                    }
                    else
                    {
                        Console.WriteLine("Quiz " + quiznum + " doesn't exist!");
                        choice = 0;
                    }
                }
                else if (choice == 3)
                {
                    Console.WriteLine("QUIZ CORRECTIONS");
                    Console.Write("Enter quiz no: ");
                    quiznum = int.Parse(Console.ReadLine());
                    if (quiznum <= iScores.Count)
                    {
                        Console.Write("Enter new score: ");
                        nScore = int.Parse(Console.ReadLine());
                        iScores[quiznum - 1] = nScore;
                        Console.WriteLine("Quiz " + quiznum + " successfully updated!");
                        choice = 0;
                    }
                    else
                    {
                        Console.WriteLine("Quiz " + quiznum + " doesn't exist!");
                        choice = 0;
                    }
                }
                else if (choice == 4)
                {
                    double scoresum = 0, hpssum = 0;
                    Console.WriteLine("CLASS STANDING");
                    for (int i = 1; i < iScores.Count + 1; i++)
                    {
                        scoresum += iScores[i - 1];
                        hpssum += iHps[i - 1];
                        Console.WriteLine("Quiz " + i + " Score: " + iScores[i - 1] + "\t" + "HPS: " + iHps[i - 1]);
                    }
                    Console.WriteLine("Class standing: " + (scoresum / hpssum) * 100);
                    choice = 0;
                }
                else if (choice == 5)
                {
                    Console.WriteLine("Exiting the app...");
                    Console.Write("Press any key to continue . . . ");
                }
            }
            Console.ReadKey();
        }
    }
}