ZEN Programming Language

fibonacci(n: int) = {
    a: int = 0
    b: int = 1
    
    for(i: int = 0, n) {
        println(string(a))
        temp : int = a + b
        a = b
        b = temp
    }
}

main = {
    fibonacci(5)
}

sum(begin: int, end: int) = int {
    if(begin <= end){
        begin + sum(begin+1, end)
    } else {
        0
    } 
}

main = {
    println(string(sum(1,10)))
}

sub(x:int, y:int) = int(x-y)

@test
testSub = bool{
    sub(10,20) == -10
}

sum(x:int,y:int) = int{
    x + y
}

@test
testSum = bool{
    sum(4,6) == 10
}

main = {
    runGlobalTests()
}

class Point{
    x:double
    y:double
    new(x:double,y:double) = {
        this.x = x
        this.y = y
    }
    getProduct = double(this.x*y)
}

operator +(a:Point, b:Point) = Point {
    Point(a.x + b.x,a.y + b.y)
}

string(pt: Point) = string("Point(" + string(pt.x) + ", " + string(pt.y) + ")")

main = {
    a := Point(1.5,2.5)
    b := Point(3.5,4.5)

    c := a + b
    println(string(c))
    println(string(c.getProduct()))
}