/*
James McKee
CSCD 210 Grade Scale Program.
*/

import java.util.Scanner;
public class grade
{
 
 
 public static void main(String[] args)
 {
 int choice = 0;
 double finalPercent = 30.0;
 double examsPercent = 20.0;
 double quizesPercent = 10.0;
 double assignPercent = 40.0;
 
 double finalPoints = 0;
 double examsPoints = 0;
 double quizesPoints = 0;
 double assignPoints = 0;
 
 double finalExam = 0;
 double exams = 0;
 double quizes = 0;
 double assign = 0;
 double finalGradePercentage = 0;
 
  Scanner kb = new Scanner(System.in);
 do
 {
  choice = menu(kb);
  if(choice ==1)
  {
 
  
  System.out.print("\nEnter the following using positive Integers only:\n\tTOTAL Final Exam Points Possible: ");
   finalPoints = kb.nextDouble();
  
  System.out.print("\tTOTAL Exam Points Possible:  ");
    examsPoints = kb.nextDouble();
  
  System.out.print("\tTOTAL Quiz(es) Points Possible: ");
   quizesPoints = kb.nextDouble();
  
  System.out.print("\tTOTAL Assignment Points Possible: : ");
    assignPoints = kb.nextDouble();
  }
  
  
  
  
  
  else if(choice ==2)
  {
  System.out.print("\n\nNow lets enter your scores using positive Integers only:\n" );
  System.out.print("\tEnter Your Final Exam Score: ");
  finalExam = kb.nextDouble();
  
  System.out.print("\tEnter Your Total Exams Score: ");
  exams = kb.nextDouble();
  
  System.out.print("\tEnter Your Total Quizes Score: ");
  quizes = kb.nextDouble();
  
  System.out.print("\tEnter Your Total Assignments Score: ");
  assign = kb.nextDouble();
  }
  
  else if(choice == 3)
  {
   finalGradePercentage = ((((finalExam/finalPoints)*(finalPercent/100)) + ((exams/examsPoints)*(examsPercent/100)) + ((quizes/quizesPoints)*(quizesPercent/100)) + ((assign/assignPoints)*(assignPercent/100.0))) * 100); 
   printFinalGrade(finalGradePercentage);
  }
  
 }while (choice != 4);
  
  System.out.println("Thank you and have a nice day");
 
 
 }//end of main
 
  public static int menu(Scanner kb)
  {
  int choice;
   do
   {
   
    System.out.println("\nPlease select from the following menu choices.\n");
    System.out.println("\t1. Enter Total Points For Your Class: ");
    System.out.println("\t2. Enter Your Points For Your Class: ");
    System.out.println("\t3. Show Your Grade");
    System.out.println("\t4. Quit the program");
    System.out.print("\nChoice --> ");
    choice = kb.nextInt();
    System.out.print("\n");
   
    if(choice < 1 || choice > 4)
     {
      System.out.println("I am sorry that is an invalid menu choice.\nPlease try again");
     }// end of if loop
    }while(choice < 1 || choice > 4);
  return choice;
 }// end menu
 
public static void printFinalGrade(double finalGradePercentage)
 {
  double gpa = 0.0;
   if(finalGradePercentage > 95.0)
    gpa = 4.0;
   
   else if(finalGradePercentage < 95.0 && finalGradePercentage > 61.0)
    {
    gpa = 4.0 -((95.0 - finalGradePercentage)*0.1);
    }
   else if(finalGradePercentage < 62.0 && finalGradePercentage > 59.0)
    gpa = 0.7;
   else
    gpa = 0.0;
    
   if(gpa > 2.5) 
   System.out.printf("\nYour final grade is %3.2f with a %3.2f percent, Congrants!",gpa,finalGradePercentage);
   
   else
   System.out.printf("\nYour final grade is %3.2f with a %3.2f percent, Better Luck Next Time!!",gpa,finalGradePercentage);
 }//end of print final grade
 
 
}// end of class