QSC — QuickScript Code

Language Documentation · December 2025

This is a historical document. QSC was the original proof-of-concept that later evolved into the XCX programming language.

Origin

QSC (QuickScript Code) was created in late 2025 as a research experiment with one specific goal: to determine whether artificial intelligence is capable of designing a working programming language with a fully functional runtime interpreter — from scratch.

The project had no educational or commercial ambitions. It was an attempt to answer a question about the limits of AI in the field of language engineering.

Language Overview

QSC is a dynamically typed scripting language designed for readable syntax and a low entry barrier. It offers optional type declarations, classic control structures, and built-in randomness primitives.

Syntax and Language Constructs

Function Declaration

dec function (name) {
    // function body
}

Variables

var(int) a = 1     // with explicit type declaration
var b = 5          // without declaration — flexible form

Output

say(value)

Code Examples

Random Greeting

import random

dec function (welcome) {
    count = random.choice from (N = 0, 1, 2)
        {
            if count == 0 then
                return "hello"
            elseif count == 1 then
                return "goodbye"
            else
                return "error"
        }
}

say(welcome())

Mathematical Operations

dec function (calculate) {
    var(int) a = 1
    var(int) b = 5

    say (a + b)
    say (a - b)
    say (a * b)
    say (a / b)
}

Alternative version without explicit type declaration:

dec function (calculate) {
    var a = 1
    var b = 5

    say (a + b)
    say (a - b)
    say (a * b)
    say (a / b)
}

Conditional Math with Randomness

import random

dec function (calculate) {
    var a
    var b

    a = random.choice from (N = 0..26)
    b = random.choice from (N = 0..26)

    {
        if a > b then
            say(a * b)
        elseif a < b then
            say(a - b)
        else
            say("a and b are equal")
    }
}

Loops

For loop:

dec function (loopTest) {
    for(i) from (N = 0..40) {
        say(i)
    }
}

While loop:

dec function (loopTest) {
    var a = 0
    while (a < 5) {
        say(a)
        a += 1
    }
}

Loop with Conditional Logic and Randomness

import random

dec function (RandomMathLoop) {
    var a
    var b

    a = random.choice from (N = 0..30)
    b = random.choice from (N = 0..30)

    while (a < b) {
        {
            if a > b then
                say(a * b)
            elseif a < b then
                say(a - b)
            else
                say("EQUAL")
        }

        a += random.choice from (N = 1..8)
    }
}

Arrays

var table = [0, 1, 2, 3, 4, 5]
    say(table[0])
    for n in table // 'n' holds each table value
    say(n)

Array Element Classification

dec function (displayElements) {
    var table = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
    say(table[0])
    for n in table {
        if n < 3 then
            say("n is in between 0 and 3")
        elseif n > 3 and n <= 7 then
            say("n is in between 3 and 7")
        else
            say("n is greater than 7")
    }
}