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Question
Design a class to overload a function area( ) as follows:
(i) double area (double a, double b, double c) with three double arguments, returns the area of a scalene triangle using the formula:
area = `sqrt ("s" ("s" - "a")("s" - "b")("s" - "c")) "2ab"`
where `"s" = ("a" + "b" + "c")/2`
(ii) 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)
(iii) double area (double diagonal 1, double diagonal 2) with two double arguments, returns the area of a rhombus using the formula :
area = `1/2` (diagonal 1 × diagonal 2)
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Solution
class Overload
{
double area(double a; double b, double c)
{
doub;le s, r;
s=(a+b+c)/2;
r=s*(s-a)*(s-b)*(s-c);
double ar = Math.sqrt (r);
return ar;
}
double area(int a, int b, int height)
{
return area;
}
double area (double diagonal1,double diagonal2)
{
double area=(diagonal1*diagonal2)/2;
return area;
}
The variable description is as follows:
| S.No. | Variable Name | Data type | Purpose |
| 1. | a | double | to enter side of the triangle |
| 2. | b | double | to enter side of the triangle |
| 3. | c | double | to enter side of the triangle |
| 4. | s | double | to store the value of s in area formula used. |
| 5. | r | double | to store the value of r in area formula used. |
| 6. | area | double | to store area of various shapes |
| 7. | a | int | to enter side of trapezium |
| 8. | b | int | to enter side of trapezium |
| 9. | height | int | to enter height of trapezium |
| 10. | diagonal 1 | double | to enter diagonal of rhombus |
| 11. | diagonal 2 | double | to enter diagonal of rhombus |
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