Computer Applications
Design a class to overload a function area( ) as follows:
- 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 - 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) - 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
Program Explanation
Output
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Related Questions
Design a class to overload a function series( ) as follows:
(a) void series (int x, int n) – To display the sum of the series given below:
x1 + x2 + x3 + ………. xn terms
(b) void series (int p) – To display the following series:
0, 7, 26, 63 ………. p terms
(c) void series () – To display the sum of the series given below:
1/2 + 1/3 + 1/4 + ………. 1/10
Consider the following program segment and answer the questions below:
class calculate { int a; double b; calculate() { a=0; b=0.0; } calculate(int x, double y) { a=x; b=y; } void sum() { System.out.println(a*b); }}Name the type of constructors used in the above program segment?
Define a class to overload the method perform as follows:
double perform (double r, double h) — to calculate and return the value of curved surface area of cone
void perform (int r, int c) — Use NESTED FOR LOOP to generate the following format
r = 4, c = 5
output
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
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Invoking a method by passing the objects of a class is termed as:
- Call by reference
- Call by value
- Call by method
- Call by constructor