Rust Triangle Classifier function

Rust Pattern Maching: Exercise-14 with Solution

Write a Rust function that takes a tuple (i32, i32, i32) and returns "Equilateral" if all sides are equal, "Isosceles" if two sides are equal, and "Scalene" otherwise.

Sample Solution:

Rust Code:

// Function to determine the type of triangle based on the lengths of its sides.
fn classify_triangle(sides: (i32, i32, i32)) -> &'static str {
    // Extract individual sides from the tuple
    let (a, b, c) = sides;
    
    // Check if all sides are equal
    if a == b && b == c {
        // If all sides are equal, return "Equilateral"
        "Equilateral"
    // Check if at least two sides are equal
    } else if a == b || b == c || c == a {
        // If two sides are equal, return "Isosceles"
        "Isosceles"
    // If no sides are equal, return "Scalene"
    } else {
        "Scalene"
    }
}

fn main() {
    // Example usage
    let triangle1 = (4, 4, 4); // Equilateral triangle
    let triangle2 = (3, 4, 3); // Isosceles triangle
    let triangle3 = (3, 4, 5); // Scalene triangle
    
    println!("{:?}: {}", triangle1, classify_triangle(triangle1)); // Output: (3, 3, 3): Equilateral
    println!("{:?}: {}", triangle2, classify_triangle(triangle2)); // Output: (3, 4, 3): Isosceles
    println!("{:?}: {}", triangle3, classify_triangle(triangle3)); // Output: (3, 4, 5): Scalene
}

Output:

(4, 4, 4): Equilateral
(3, 4, 3): Isosceles
(3, 4, 5): Scalene

Explanation:

In the exercise above,

This Rust code defines a function "classify_triangle()" that takes a tuple (i32, i32, i32) representing the lengths of the sides of a triangle.

• The function checks if all sides are equal. If so, it returns "Equilateral".
• If not all sides are equal but at least two sides are equal, it returns "Isosceles".
• If no sides are equal, it returns "Scalene".

In the "main()" function, three examples of triangles are provided with their side lengths. The "classify_triangle()" function is called for each triangle, and the result is printed to the console.

Rust Code Editor:

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