Japanese English

Quick Guide to VCSSL & Vnano for C-Style Language Users

This page provides a quick-start guide for users familiar with C-style languages such as C or C++.

If you feel the content here moves too quickly, we recommend reading the Syntax Guide instead. Also, if you're completely new to programming, this guide may not be suitable -- please refer to the Startup Guide instead.

Introduction

VCSSL is a scripting language designed for relatively lightweight computation, data visualization, and simple GUI tool development. Vnano (VCSSL nano) is a subset of VCSSL designed for embedding in applications.

Both adopt a simple, C-style syntax to allow users of existing C-family languages (such as C/C++) to start using them with minimal learning effort.

This guide is intended as a fast-track introduction for C-style language users to get started with VCSSL as quickly as possible. It assumes the reader is already familiar with at least one C-style language, so explanations of common concepts are kept to a minimum for the sake of brevity.

Roughly speaking, the guide is organized into three introductory sections (overview/syntax) followed by two more advanced sections, designed to be read in a day or two.

Now, let's dive into programming with VCSSL!

Table of Contents


Overview of VCSSL
A brief summary of what VCSSL is, tailored for users of C-style languages.

Running Programs and Basic Input/Output
Write and run actual programs using VCSSL and Vnano, and learn how to perform basic input and output operations.

Key Syntax and Features of VCSSL
An overview of VCSSL's main syntax and language features, with C-language users in mind.

GUI and 2D/3D Graphics
A quick look at how to use GUI components and 2D/3D graphics from the standard library.

Interfacing with External Languages
Finally, learn how to call external language code from within VCSSL.

Japanese English
Index
News From RINEARN
* VCSSL is developed by RINEARN.

VCSSL 3.4.52 Released: Enhanced Integration with External Programs and More
2025-05-25 - This update introduces enhancements to the external program integration features (e.g., for running C-language executables). Several other improvements and fixes are also included. Details inside.

Released: Latest Version of VCSSL with Fixes for Behavioral Changes on Java 24
2025-04-22 - VCSSL 3.4.50 released with a fix for a subtle behavioral change in absolute path resolution on network drives, introduced in Java 24. Details inside.

Released the Latest Versions of RINEARN Graph and VCSSL - Now Supporting Customizable Tick Positions and Labels!
2024-11-24 - Starting with this update, a new "MANUAL" tick mode is now supported, allowing users to freely specify the positions and labels of ticks on the graph. We'll explain the details and how to use it.

Released Exevalator 2.2: Now Compatible with TypeScript and Usable in Web Browsers
2024-10-22 - The open-source expression evaluation library, Exevalator, has been updated to version 2.2. It now supports TypeScript and can be used for evaluating expressions directly in web browsers. Explains the details.

Behind the Scenes of Creating an Assistant AI (Part 1: Fundamental Knowledge)
2024-10-07 - The first part of a series on how to create an Assistant AI. In this article, we introduce the essential knowledge you need to grasp before building an Assistant AI. What exactly is an LLM-based AI? What is RAG? And more.

Launching an Assistant AI to Support Software Usage!
2024-09-20 - We've launched an Assistant AI that answers questions about how to use RINEARN software and helps with certain tasks. Anyone with a ChatGPT account can use it for free. We'll explain how to use it.

Software Updates: Command Expansion in RINEARN Graph, and English Support in VCSSL
2024-02-05 - We updated our apps. This updates include "Enhancing the Command-Line Features of RINEARN Graph" and "Adding English Support to VCSSL." Dives into each of them!

Inside the Repetitive Execution Speedup Impremented in Vnano Ver.1.1
2024-01-17 - Delves into the update in Vnano 1.1 from a developer's viewpoint, providing detailed insights into the specific improvements made to the internal structure of the script engine.