# example.bellronos

import math
import io
import string

define calculate_circle_area(radius: float) -> float:
    return math.pi * radius * radius

define greet(name: string) -> none:
    io.print("Hello, " + string.to_upper(name) + "!")

class Person:
    define __init__(self, name: string, age: int) -> none:
        self.name = name
        self.age = age
    
    define introduce(self) -> none:
        io.print("My name is " + self.name + " and I'm " + string.to_string(self.age) + " years old.")

define main() -> none:
    # Basic operations and function calls
    set radius to 5.0
    set area to calculate_circle_area(radius)
    io.print("The area of a circle with radius " + string.to_string(radius) + " is " + string.to_string(area))

    greet("Bellronos")

    # Class usage
    set person to Person("Alice", 30)
    person.introduce()

    # Closures
    set multiplier to closure (x: int) -> int: return x * 2
    io.print("Doubled 5: " + string.to_string(multiplier(5)))

    # Generators
    define count_to(n: int) -> generator:
        set i to 0
        while i < n:
            yield i
            set i to i + 1

    for num in count_to(5):
        io.print("Generated number: " + string.to_string(num))

    # Async/await (simulated)
    async define fetch_data() -> string:
        # Simulating an asynchronous operation
        io.print("Fetching data...")
        return "Data fetched successfully"

    async define process_data() -> none:
        set result to await fetch_data()
        io.print("Processing result: " + result)

    process_data()

    # Language interoperability
    set c_code to "
        #include <stdio.h>
        int main() {
            printf(\"Hello from C!\\n\");
            return 0;
        }
    "
    io.print(execute_c(c_code))

    set python_code to "
print('Hello from Python!')
    "
    io.print(execute_python(python_code))

    set js_code to "
console.log('Hello from JavaScript!');
    "
    io.print(execute_javascript(js_code))

    set java_code to "
public class Temp {
    public static void main(String[] args) {
        System.out.println(\"Hello from Java!\");
    }
}
    "
    io.print(execute_java(java_code))

    set rust_code to "
fn main() {
    println!(\"Hello from Rust!\");
}
    "
    io.print(execute_rust(rust_code))

    set swift_code to "
print(\"Hello from Swift!\")
    "
    io.print(execute_swift(swift_code))

main()