Chapter3_Logic_Ex7

import java.util.Scanner;

/*  ==================================================
      Chapter 3: Logical and conditional expressions

                Ex7: Final grade
    ===================================================
*/

public class MyProgram {
    public static void main(String[] args) {

        //variables
        int testScore;
        int hwAvg;
        int exercises;
        double finalScore,magen;
        Scanner s=new Scanner(System.in);

        //user input- make sure valid input
        do {
            System.out.println("Enter test score: (0-100)");
            testScore = s.nextInt();
        }while(testScore<0 || testScore>100);

        do {
            System.out.println("Enter hw average: (0-100)");
            hwAvg = s.nextInt();
        }while(hwAvg<0 || hwAvg>100);

        do {
            System.out.println("Enter the number of exercises submited: (0-8)");
            exercises = s.nextInt();
        }while(exercises<0 || exercises>8);


        /*
            ===================================
            calc final score according to data
            ===================================
        */

        //student submit 1-4 exercises
        if(exercises<=4)
            finalScore=0;

        //student submit 5-6 exercises
        else if(exercises<=6){

            if(testScore<55) {  //student failed the test
                finalScore=testScore;
            }
            else {      //student passed the test → 20% valid
                finalScore = (0.8 * testScore) + (0.2 * hwAvg);
            }
        }

        //student submit 7-8 exercises
        else {
            //student failed the test
            if(testScore<55){
                if(hwAvg>=80){  //hw average above 80 → 25% magen
                    magen=(0.25*hwAvg)+(0.75*testScore);
                    finalScore= testScore>magen? testScore: magen;
                }
                else{   //hw average below 80 → 20% magen
                    magen=(0.2*hwAvg)+(0.8*testScore);
                    finalScore= testScore>magen? testScore: magen;
                }
            }


            else{     //student passed the test → 30% magen
                magen=(0.3*hwAvg)+(0.7*testScore);
                finalScore= testScore>magen? testScore: magen;
            }

        }
        System.out.println("final score: "+finalScore);
    }
}