Why are the conditions not matching ;-;

Question about the task

Rule of the triangle

Java Syntax, Level 4, Lesson 4

Under discussion

No, but seriously. I need help xD

Use the keyboard to enter three numbers a, b, and c (the lengths of the sides of the proposed triangle).
Determine whether a triangle with these sides can exist.
Display the result as follows:
"The triangle is possible." - if a triangle with these sides could exist.
"The triangle is not possible." - if a triangle with these sides cannot exist.

Hint:
A triangle can exist only if the sum of two of its sides is greater than the third side.
You need to compare each side with the sum of the other two.
If even one side is larger or equal to the sum of the other two sides, then no such triangle exists.

Requirements:

The program should read three numbers from the keyboard.
The program should display text on the screen according to the task conditions.
If a triangle with the specified sides could exist, you need to display: "The triangle is possible."
If a triangle with the specified sides cannot exist, you need to display: "The triangle is not possible."

package com.codegym.task.task04.task0415; /* Rule of the triangle */ import java.io.*; public class Solution { public static void main(String[] args) throws Exception { BufferedReader bu = new BufferedReader(new InputStreamReader(System.in)); int a = Integer.parseInt(bu.readLine()); int b = Integer.parseInt(bu.readLine()); int c = Integer.parseInt(bu.readLine()); if(a + b > c) { System.out.println("The triangle is possible."); } else if(b + c > a) { System.out.println("The triangle is possible."); } else if(a + c > b) { System.out.println("The triangle is possible."); } else { System.out.println("The triangle is not possible."); } } }

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Ravi Kumar

Level 5 , Jaipur, India

17 October 2019, 16:24

Try this solution and if u still need help then contact me

import java.io.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        //write your code here
        BufferedReader sc = new BufferedReader(new InputStreamReader(System.in));
        String s = sc.readLine();
        int a = Integer.parseInt(s);
        String t = sc.readLine();
        int b = Integer.parseInt(t);
        String u = sc.readLine();
        int c = Integer.parseInt(u);
        if(a>=b+c || b>=a+c || c>=a+b){
            System.out.println("The triangle is not possible.");
        }
        else
            System.out.println("The triangle is possible.");

    }
}

Supriya Mishra

Level 10 , Bangalore, India

19 March 2019, 17:11

Here import import java.util.*; is missing.

Nasireddypavan Kumar

Level 5 , Chennai, India

11 February 2019, 14:10

import java.io.*; import java.util.*; public class Solution { public static void main(String[] args) throws Exception { //write your code here Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); int c = sc.nextInt(); if ( (a+b)>c && (b+c)>a && (c+a)>b){ System.out.println("The triangle is possible."); } else if((a+b)>c || (b+c)>a || (c+a)>b){ System.out.println("The triangle is not possible."); } } }

Rakesh Kumar

Level 16 , Gambat, Pakistan

13 June 2019, 16:34

Thank you very much

Love Patel

Level 5 , San Leandro, United States

5 December 2018, 03:30

first of all thankyou for posting this because I was always declaring new string variables to parse int but this is a great suggestion! Coming to your problem its simple error in logic. Read the hint "If even one side is larger than the sum of the other two sides, then no such triangle exists." So you shouldn't print "the triangle is possible" just after checking one condition. All three conditions must be correct for the triangle to be possible. you could simply use an '&&' operator to check all three condition and display the line like below:

if((a+b)>c && (a+c)>b && (b+c)>a)
        System.out.println("The triangle is possible.");
 else
        System.out.println("The triangle is not possible.");

if you still want to do what you are doing then do this:

if (a + b > c)
        {
            if (b + c > a)
            {

                if (c + a > b)
                    System.out.println("The triangle is possible.");
                else
                    System.out.println("The triangle is not possible.");
            }
            else
            System.out.println("The triangle is not possible.");
        }
        else
        System.out.println("The triangle is not possible.");

or you can reverse the condition like below:

if(a >= b+c){
           System.out.print("The triangle is not possible.");
       }
       else if (b >= a+c){
           System.out.print("The triangle is not possible.");
       }
       else if(c >= a+b){
           System.out.print("The triangle is not possible.");
       }
       else
           System.out.print("The triangle is possible.");

Hopefully any of the three solutions above helps you. If you have questions let me know :)

Artem Divertitto Senior Android Developer at United Tech

13 September 2018, 06:42

If I write 1,2,3. After first if, you enter at second condition(else if) and then write at console wrong text. Try to fix it

Khurram

Level 16 , Lahore, Pakistan

13 September 2018, 04:51

try it for (1,1,3)

Neus

Level 5 , Berlin, Germany

13 September 2018, 00:43

That won't help you with the verification ( I am currently having the same problem than you so I cannot help there) but why don't you try to avoid repeating code by using some of the known logical operators such as AND and OR?, one if and one else cases should be enough to solve that ;)