Question

Write a Java program that uses six grades as integer values and calculate their average. Result must be printed as a floating data type. Design your program using the following specifications.

1. You must declare integer variables to hold the grades. Assume grades are always integer.

2. Result must be stored in a separate variable.

3. All numbers in the output must be in floating data type.

4. All grades must be displayed in one significant digit floating number.

5. Class average must be displayed in two significant digit floating number.

The first number is:90.0 The second number is: 85.0 The third number is:97.0 The fourth number is 99.0 The fifth number is: 51.0 The sixth number is: 71.0 The class average is: 82.17

Answer 1

public class AverageGrade {

    public static void main(String[] args) {
        int first = 90, second = 85, third = 97, fourth = 99, fifth = 51, sixth = 71;
        float avg = (float) ((first + second + third + fourth + fifth + sixth) / 6.0);
        System.out.printf("  The first number is:\t%.1f\n", (float)first);
        System.out.printf("  The second number is:\t%.1f\n", (float)second);
        System.out.printf("  The third number is:\t%.1f\n", (float)third);
        System.out.printf("  The fourth number is:\t%.1f\n", (float)fourth);
        System.out.printf("  The fifth number is:\t%.1f\n", (float)fifth);
        System.out.printf("  The sixth number is:\t%.1f\n", (float)sixth);
        System.out.println("--------------------------------");
        System.out.printf("  The class average is:\t%.2f\n", avg);
    }

}

The first number is: 90.0 The second number is: 85.0 The third number is: 97.0 The fourth number is: 99.0 The fifth number is: 51.0 The sixth number is: 71.0 The class average is: 82.17 Process finished with e xit code 0