---

declaration    → classDecl
               | funDecl
               | varDecl
               | statement ;

statement      → exprStmt
               | forStmt
               | ifStmt
               | printStmt
               | returnStmt
               | whileStmt
               | block ;

block          → "{" declaration* "}" ;

---

Flux Language Examples

1. Variables and Printing

var name = "Alice";
var age = 25;
print name + " is " + age + " years old.";

Output:

Alice is 25 years old.

2. Control Flow

If-Else

var x = 10;
if (x > 5) {
    print "x is greater than 5";
} else {
    print "x is 5 or less";
}

Output:

x is greater than 5

While Loop

var count = 3;
while (count > 0) {
    print count;
    count = count - 1;
}
print "Done!";

Output:

3
2
1
Done!

For Loop

for (var i = 0; i < 5; i = i + 1) {
    print i;
}

Output:

0
1
2
3
4

3. Functions

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

Output:

Hello, Alice!

4. Closures

fun makeCounter() {
    var count = 0;
    fun increment() {
        count = count + 1;
        print count;
    }
    return increment;
}
var counter = makeCounter();
counter(); // 1
counter(); // 2

Output:

1
2

5. Classes and Objects

class Person {
    init(name, age) {
        this.name = name;
        this.age = age;
    }
    greet() {
        print "Hello, my name is " + this.name;
    }
}
var alice = Person("Alice", 25);
alice.greet();

Output:

Hello, my name is Alice

6. Inheritance

class Animal {
    speak() {
        print "Some generic animal sound";
    }
}
class Dog < Animal {
    speak() {
        print "Woof!";
    }
}
var pet = Dog();
pet.speak(); // Woof!

Output:

Woof!