A program that will compute the grades of the student and then it will display the letter grade of the student using Java programming language.

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Program Listing


/* grades.java
 * 
 * Author : Jake Rodriguez Pomperada, MAED-IT, MIT
 * www.jakerpomperada.com  and www.jakerpomperada.blogspot.com
 * jakerpomperada@gmail.com
 * Bacolod City, Negros Occidental Philipipines
 */

import java.util.Scanner;

public class grades {
  /** Main method */
  public static void main(String[] args) {
    // Create a Scanner
    Scanner input = new Scanner(System.in);
    
    int[] scores = new int[100];
    int average=0; int total_sum=0, numberOfGrades;
    char grade = 0; 
    int grades=0;
    int i=0;
   
    System.out.println();
    System.out.println("\tComputation of Grades in Java");
    System.out.println();
    System.out.print("# of grades: ");
    numberOfGrades = input.nextInt();

  

    for (i = 1; i <= numberOfGrades; i++) {
      System.out.print("("+i+"): ");
      scores[i] = input.nextInt();
      
    }

    System.out.println();
   
    for ( i = 1; i <= numberOfGrades; i++) {
       
      total_sum+=scores[i];
      average = (total_sum/numberOfGrades)* 10;
    grades = (average);
    }  
      System.out.print(grades);
      
      
      System.out.println();
     
    

        
    String output = "";

    
    if (grades >= 91 && grades <= 100) 
        grade = 'A';
      else if (grades >= 81 && grades <= 90) 
        grade = 'B';
      else if (grades >= 71 && grades <= 80)
        grade = 'C';
      else if (grades >= 61 && grades <= 70)
        grade = 'D';
      else if (grades <= 60)
        grade = 'E';

      output += "Your Grade is " + grades + ": Descriptive Rating: "
         + grade;
       
       System.out.println();
        System.out.println(output);
     input.close();
  }
}

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