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Design a class to overload a function area( ) as follows:

  1. double area (double a, double b, double c) with three double arguments, returns the area of a scalene triangle using the formula:
    area = √(s(s-a)(s-b)(s-c))
    where s = (a+b+c) / 2
  2. double area (int a, int b, int height) with three integer arguments, returns the area of a trapezium using the formula:
    area = (1/2)height(a + b)
  3. double area (double diagonal1, double diagonal2) with two double arguments, returns the area of a rhombus using the formula:
    area = 1/2(diagonal1 x diagonal2)

Java

User Defined Methods

ICSE 2014

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Answer

import java.util.Scanner;

public class KboatOverload
{
    double area(double a, double b, double c) {
        double s = (a + b + c) / 2;
        double x = s * (s-a) * (s-b) * (s-c);
        double result = Math.sqrt(x);
        return result;
    }
    
    double area (int a, int b, int height) {
        double result = (1.0 / 2.0) * height * (a + b);
        return result;
    }
    
    double area (double diagonal1, double diagonal2) {
        double result = 1.0 / 2.0 * diagonal1 * diagonal2;
        return result;
    }
}

Variable Description Table

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