using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Welcome to our system, please enter the student name to continue");

        string studentName,studentGradeInput,bestGradeStudent = " ";

        int studentGrade, studentsNumber = 0, pass = 0, fail = 0, bestGrade = 0, sum = bestGrade;

        double average = 0;

        studentName = Console.ReadLine();

            while (studentsNumber <= 50 && studentName != "stop")

            {

                Console.WriteLine("Pleas enter the grade to " + studentName);

                studentGradeInput = Console.ReadLine();

                studentGrade = int.Parse(studentGradeInput);

                studentsNumber++;

                average = studentGrade;

                if (bestGrade <= studentGrade)

                {

                    bestGrade = studentGrade;

                    bestGradeStudent = studentName;

                }

                pass = studentGrade > 55 ? pass = pass + 1 : fail = fail + 1;

                sum = sum + studentGrade;

                average = sum / studentsNumber;

​

​

                Console.WriteLine("please enter the next student name");

                studentName = Console.ReadLine();

            }

        {

            Console.WriteLine("The plan stopped by your command - lets sum up the details till now below:");

            Console.WriteLine("You looking for " + studentsNumber + " students");

            Console.WriteLine("The average is: " + average);

            Console.WriteLine("The students who pass the exam are: " + pass);

            Console.WriteLine("The students who failed and need retake are: " + fail);

            Console.WriteLine("The student who got the high grade is: " + bestGradeStudent + ", which got "+ bestGrade); 

        }

    }

}