Solve the program with function call. Check out the description.

Question

Write a program using function called area() to find the area of a circle, square and rectangle and display to the output as per user's choice. Solve the program along with the function call.

Answer 1

Take Variables according to need of your area formula how many Variables you want for example
U need to calculate area of rectangle is l*b here u need two Variables declear length and breadth then for circle u need to declear pi also
Then make one Which Which name will be area
area()
{
write here statements to print area
}

And create object and call your area function if you dont know how to create function u can search on google or you can see solo lessons.

Answer 2

Check this one here you decleared same function name for all so it will give you errors . You should change name or pass different different arguments if you know about constructor then the sign should be different functions name will be same .

class pubg
{
public double area(int r)
{
double arcircle=3.14*r*r;
return(arcircle);
}
public int area(int s)
{
int arsquare=s*s;
return(arsquare);
}
public int area(int l,int b)
{
int arrectangle=l*b;
return(arrectangle);
}

Your another mistake is you missed semicolon where you decleared
double p=0 ;

Answer 3

//To find the area of circle,square,and rectangle
import java.io.*;
class pubg
{
public double area(int r)
{
double arcircle=3.14*r*r;
return(arcircle);
}
public int area(int s)
{
int arsquare=s*s;
return(arsquare);
}
public int area(int l,int b)
{
int arrectangle=l*b;
return(arrectangle);
}
public static void main(String args[])throws IOException
{
DataInputStream x=new DataInputStream(System.in);
int r=0,q=0;
double p=0,
pubg ob= new pubg();
System.out.println("Enter the radius of circle");
int r1=Integer.parseInt(x.readLine());
p=ob.area(r1);
System.out.println("Area of circle is:"+p);
System.out.println("Enter the side of square");
int s1=Integer.parseInt(x.readLine());
q=ob.area(s1);
System.out.println("Enter the length and breadth of rectangle");
int l1=Integer.parseInt(x.readLine());
int b1=Integer.parseInt(x.readLine());
r=ob.area(l1,b1);
}
}

Answer 4

Hey! Can you please add the function calling in this too (menu driven) i.e the area of only shape will be displayed that will be choosen by the user