test.lox

// Variable declarations
var a = 10;
var b = 20;
var c = a + b;
print c; // 30

// Arithmetic operations
print a + b; // 30
print a - b; // -10
print a * b; // 200
print b / a; // 2

// Conditional statements
if (a < b) {
    print "a is less than b";
} else {
    print "a is not less than b";
}

// Loops
var i = 0;
while (i < 5) {
    print i;
    i = i + 1;
}

// Functions
fun greet(name) {
    print "Hello, " + name + "!";
}

greet("Lox");

// Return values
fun add(x, y) {
    return x + y;
}

var result = add(3, 4);
print result; // 7

// Closure
fun makeCounter() {
    var count = 0;
    fun increment() {
        count = count + 1;
        return count;
    }
    return increment;
}

var counter = makeCounter();
print counter(); // 1
print counter(); // 2
print counter(); // 3

// Classes and inheritance
class Animal {
    speak() {
        print "The animal makes a sound.";
    }
}

class Dog < Animal {
    speak() {
        print "The dog barks.";
    }
}

var animal = Animal();
animal.speak(); // The animal makes a sound.

var dog = Dog();
dog.speak(); // The dog barks.