Assignment 4

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

namespace Assignment4
{
    class Program
    {
        static void Main(string[] args)
        {
            Program p = new Program();
            string quit = "y";
            while (quit != "n")
            {
                p.CreateArrays();
                Console.WriteLine("Do you want start over? n to quit");
               quit=Console.ReadLine();
                quit.ToLower();
            }
            Console.ReadKey();
        }

        private void CreateArrays()
        {
            Console.WriteLine("How many Grades do you want to enter");
            int number = int.Parse(Console.ReadLine());

            double[] grades = new double[number];
            double[] credits = new double[number];

            FillArrays(grades, credits);
            

        }

        private void FillArrays(double[] grades, double[] credits)
        {
            for (int counter = 0; counter < grades.Length; counter++)
            {
                double grade = 0;
                do
                {
                    Console.WriteLine("Enter a Grade");
                    grade = double.Parse(Console.ReadLine());
                    if (grade <= 0 || grade > 4)
                    {
                        Console.WriteLine("Grades must be between 0 and 4");
                    }

                } while (grade <= 0 || grade > 4);
                grades[counter]=grade;

                Console.WriteLine("Enter the Credits");
                credits[counter] = double.Parse(Console.ReadLine());
            }//end for
            CalculateGPA(grades, credits);
        }//end fill arrays

        private void CalculateGPA(double[] grades, double[] credits)
        {
            double totalCredits = 0;
            double weight = 0;

            for (int counter = 0; counter < grades.Length; counter++)
            {
                weight+=grades[counter] * credits[counter];
                totalCredits += credits[counter];
            }//end for

            
            
            double gpa = weight / totalCredits;

            Console.WriteLine("Your GPA is {0:F1}", gpa);
        }

    }//end class
}

and here is the code for doing random numbers

 static void Main(string[] args)
  {
            
            Random rand = new Random();
            int number = rand.Next(1, 10);
            Console.WriteLine(number);
            Console.ReadKey();

   }