Podcast
Questions and Answers
What condition must be met for the program to classify the input angles as a triangle?
What condition must be met for the program to classify the input angles as a triangle?
- The individual angles must all be less than 90 degrees.
- The sum of the angles must equal 90 degrees.
- The sum of the angles must be greater than 180 degrees.
- The sum of the angles must be exactly 180 degrees. (correct)
How does the program identify an acute triangle?
How does the program identify an acute triangle?
- At least one angle is exactly 90 degrees.
- At least one angle is greater than 90 degrees.
- All angles are equal to 60 degrees.
- All angles are less than 90 degrees. (correct)
Which part of the program checks whether the triangle's angles are valid?
Which part of the program checks whether the triangle's angles are valid?
- The print statement indicating the triangle type.
- The switch statement evaluating operational modes.
- The if condition checking if a + b + c > 180.
- The if condition checking if a + b + c == 180. (correct)
What is a flaw in the angle checking logic for classifying a triangle's type?
What is a flaw in the angle checking logic for classifying a triangle's type?
What will the program output if the user inputs angles of 60, 60, and 60?
What will the program output if the user inputs angles of 60, 60, and 60?
What will be the output if the sum of angles entered is 190?
What will be the output if the sum of angles entered is 190?
In the switch statement, what happens if an invalid input is provided as 'op'?
In the switch statement, what happens if an invalid input is provided as 'op'?
What does the import statement 'import java.util.*;' indicate?
What does the import statement 'import java.util.*;' indicate?
Flashcards
Triangle Angle Sum
Triangle Angle Sum
The sum of the angles in any triangle must be 180 degrees.
Acute Triangle
Acute Triangle
A triangle with all three angles less than 90 degrees.
Right Triangle
Right Triangle
A triangle with one angle exactly 90 degrees.
Obtuse Triangle
Obtuse Triangle
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Input Validation
Input Validation
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Scanner Class (Java)
Scanner Class (Java)
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Platform Independence (Programming)
Platform Independence (Programming)
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Object-Oriented Programming
Object-Oriented Programming
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Study Notes
Java Program - Triangle Classification
-
Program Description: Classifies a triangle based on its angles (acute, right, obtuse) given three angles as input.
-
Import Statement: Imports
java.util.*for input/output operations. -
Class Definition: Defines a public class named
Triangle. -
Main Method:
- Initializes a
Scannerobject to read input from the console. - Prompts the user to enter three angles.
- Reads the angles using
sc.nextInt()and stores them in variablesa,b, andc. - Checks if the sum of angles is 180 degrees. If not, output "Triangle is not possible".
- Conditional Statements: Uses
if-elsestatements to classify the triangle:- If all angles are less than 90 degrees, the triangle is acute.
- If all angles are equal to 90, the triangle is right-angled.
- If any angle is greater than 90 degrees, the triangle is obtuse-angled.
- Initializes a
-
Output: Prints the type of triangle (acute, right, obtuse, or not possible) to the console using
s.o.pln().
Features
- Object-Oriented: The program is potentially object-oriented based on the mention of object-oriented and robust/secure elements from another section.
- Platform Independent: The code is designed to work across various platforms without modification.
Errors
- Input Validation: The program lacks validation that the input represents valid angles. For example, it does not check that the input values are positive and their sum is 180 to ensure it is a valid triangle. Also, each individual angle greater than 0 and less than 180.
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