Java Program to Enter Marks of Five Subjects and Calculate Total, Percentage, and Grade

Java program to enter marks of five subjects and calculate total, percentage, and grade.

In this article, you will learn how to write a java program to enter marks of five subjects and calculate the Total, Percentage, and Grade.

 

Example

 

You should have the knowledge of following these topics in java programming to understand this example:

• Java java.util.Scanner package
• Java main() method
• Java System.out.println() method
• Java If-else statement
• Java Switch statement
• Java Functions

 

Standard Formula

Total = marks1 + marks2 + marks3 + marks4 + marks5

Average = Total / 5.0

Percentage = (Total / 500.0) x 100

 

Where marks1, marks2, marks3, marks4, and marks5 are the marks of five subjects.

 

In this article, we solve this problem in three methods:

1. Using the normal calculation
2. Using the switch case
3. Using the function

Source Code

// Java Program to Enter Marks of Five Subjects and Calculate Total, Percentage, and Grade
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        System.out.println("Enter the marks of five subjects::\n");

        // To store the values of five subjects
        float sub_1 = in.nextFloat();
        float sub_2 = in.nextFloat();
        float sub_3 = in.nextFloat();
        float sub_4 = in.nextFloat();
        float sub_5 = in.nextFloat();

        float total;
        float average;
        float percentage;
        char grade;

        // Calculate total, average and percentage
        total = sub_1 + sub_2 + sub_3 + sub_4 + sub_5;
        average = (float)(total / 5.0);
        percentage = (float)((total / 500.0) * 100);

        // It will calculate the Grade
        if (average >= 90)
            grade = 'A';
        else if (average >= 80 && average < 90)
            grade = 'B';
        else if (average >= 70 && average < 80)
            grade = 'C';
        else if (average >= 60 && average < 70)
            grade = 'D';
        else
            grade = 'E';

        // It will produce the final output
        System.out.println("\nThe Total marks   = " + total + "/500.0");
        System.out.println("The Average marks = " + average);
        System.out.println("The Percentage    = " + percentage + "%");
        System.out.println("The Grade         = '" + grade + "'");
    }
}

Run Program

Output

 

Explanation

Average: we take the marks of five subjects as input after that the sum of these marks is divided by 5 then It will return the average value of the marks.

Percentage: we made a division of the sum of user's marks by 500 then It multiplied by 100 then It will return the percentage value of the marks.

Grade: we compared the value of the Average marks with this range of marks to find the Grade of students like:

 

If  Average marks >= 90 then Its Grade is 'A'

If Average marks >= 80 and < 90 then Its Grade is 'B'

If Average marks >= 70 and < 80 then Its Grade is 'C'

If Average marks >= 60 and < 70 then Its Grade is 'D'

If Average marks < 60 then Its Grade is 'E'

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Java Program to Calculate Percentage of Marks using Switch Case

// Java Program to Calculate Percentage of Marks using Switch Case
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        System.out.println("Enter the marks of five subjects::\n");

        // To store the values of five subjects
        float sub_1 = in.nextFloat();
        float sub_2 = in.nextFloat();
        float sub_3 = in.nextFloat();
        float sub_4 = in.nextFloat();
        float sub_5 = in.nextFloat();

        float total;
        float average;
        float percentage;
        char grade;
        int sAvg;

        // Calculate total, average and percentage
        total = sub_1 + sub_2 + sub_3 + sub_4 + sub_5;
        average = (float)(total / 5.0);
        percentage = (float)((total / 500.0) * 100);

        // It will divides average by 10 check switch expression
        sAvg = (int) average / 10;

        // It will calculate the Grade
        switch (sAvg) {
            case 10:
                grade = 'A';
                break;

            case 9:
                grade = 'A';
                break;

            case 8:
                grade = 'B';
                break;

            case 7:
                grade = 'C';
                break;

            case 6:
                grade = 'D';
                break;

            default:
                grade = 'E';
                break;
        }

        // It will produce the final output
        System.out.println("\nThe Total marks   = " + total + "/500.0");
        System.out.println("The Average marks = " + average);
        System.out.println("The Percentage    = " + percentage + "%");
        System.out.println("The Grade         = '" + grade + "'");
    }
}

Run Program

 

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Python Program to Calculate Total Marks Percentage and Grade of a Student

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Java Program to Calculate Percentage of Marks using Function

// Java Program to Calculate Percentage of Marks using Function
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        System.out.println("Enter the marks of five subjects::\n");

        // To store the values of five subjects
        float sub_1 = in.nextFloat();
        float sub_2 = in.nextFloat();
        float sub_3 = in.nextFloat();
        float sub_4 = in.nextFloat();
        float sub_5 = in.nextFloat();

        // This will display the above calculation
        CalcPercentGrade(sub_1, sub_2, sub_3, sub_4, sub_5);
    }

    // This function will display the percentage, average, and grade
    private static void CalcPercentGrade(float sub_1, float sub_2, float sub_3, float sub_4, float sub_5) {
        float total;
        float average;
        float percentage;
        char grade;

        // Calculate total, average and percentage
        total = sub_1 + sub_2 + sub_3 + sub_4 + sub_5;
        average = (float)(total / 5.0);
        percentage = (float)((total / 500.0) * 100);

        // It will calculate the Grade
        if (average >= 90)
            grade = 'A';
        else if (average >= 80 && average < 90)
            grade = 'B';
        else if (average >= 70 && average < 80)
            grade = 'C';
        else if (average >= 60 && average < 70)
            grade = 'D';
        else
            grade = 'E';

        // It will produce the final output
        System.out.println("\nThe Total marks   = " + total + "/500.0");
        System.out.println("The Average marks = " + average);
        System.out.println("The Percentage    = " + percentage + "%");
        System.out.println("The Grade         = '" + grade + "'");
    }
}

Run Program

Output

 

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