Using function create a program that will ask the user if he wants to compute the perimeter or the area of the triangle in your main program If the perimeter is wanted ask the measures of the three si?

Answer 1

//Perhaps this is what you want.

//@author Rosencrantz

import java.util.Scanner;

class TriangleFun

{

public static void main(String[] args)

{

Scanner scan = new Scanner(System.in);

boolean done = false;

while(true)

{

System.out.print("Calculate AREA or PERIMETER? Type DONE to quit.");

String input = scan.nextLine().trim();

if(input.equalsIgnoreCase("DONE"))

break;

if(input.equalsIgnoreCase("AREA"))

{

System.out.print("Enter the base length: ");

double base = scan.nextDouble();

System.out.print("Enter the height: ");

double height = scan.nextDouble();

System.out.println("Area is: " + (1/2.0) * base * height);

}

else

{

System.out.print("Enter length of side 1: ");

double length1 = scan.nextDouble();

System.out.print("Enter length of side 2: ");

double length2 = scan.nextDouble();

System.out.print("Enter length of side 3: ");

double length3 = scan.nextDouble();

System.out.println("Perimeter is: " + (length1 + length2 + length3));

}

scan.nextLine();

}

}

}

//A better edited version is in the links