If a triangle with the specified sides cannot exist, you need to display: "The triangle is not possible." ! WHAT IS WRONG ??

Question about the task

Rule of the triangle

Java Syntax, Level 4, Lesson 4

Resolved

I dont know what i wrong..

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.*; import java.util.Scanner; public class Solution { public static void main(String[] args) throws Exception { Scanner IN = new Scanner(System.in); int a = IN.nextInt(); int b = IN.nextInt(); int c = IN.nextInt(); creatingTriangle(a,b,c); } static void creatingTriangle(int a , int b , int c){ int AB = sum(a,b); int AC = sum(a,c); int BC = sum(b,c); if(AB >= c && BC >= a && AC >= b) { System.out.println("The triangle is possible."); } else if (AB <= c && BC <= a && AC <= b) System.out.println("The triangle is not possible."); } static int sum(int a , int b){ return (a+b); } }

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ThomasLC

Level 16 , Singapore, Singapore

24 May 2019, 11:20

A triangle can only exist if the sum of any two sides is GREATER than the third side. Your algorithm checks for greater than OR EQUALS TO

Razvii

Level 16 , Timișoara , România

24 May 2019, 13:53

i changed algorithm with this and its wrong.. static void creatingTriangle(int a , int b , int c) { int AB = sum(a, b); int AC = sum(a, c); int BC = sum(b, c); if (AB > c && BC > a && AC > b) { System.out.println("The triangle is possible."); } else if (AB < c && BC < a && AC < b) System.out.println("The triangle is not possible."); }

Guadalupe Gagnon

Level 37 , Tampa, United States

24 May 2019, 13:57

Along with what ThomasLC said: So this task is either true or false, either the triangle is possible or it is not. If the first if statement is false then the triangle is not possible. You don't need the second if statement. Delete this:

else //if (AB <= c && BC <= a && AC <= b)
   System.out.println("The triangle is not possible.");

Razvii

Level 16 , Timișoara , România

24 May 2019, 14:10

thanks..