Japanese English

VCSSL Syntax Guide

This guide is designed to introduce the syntax of VCSSL and serves as a reference manual. It's geared towards individuals who already have programming experience. If you are new to programming, we recommend starting with the Startup Guide. For those familiar with C/C++, you may find our lighter Instant Guide particularly useful.


VCSSL is a scripting language suitable for lightweight computational tasks, visualizations, and creating simple GUI tools. Originally developed to automate calculations on calculator software, VCSSL adopts a C-like simple syntax that facilitates concise code writing while keeping the learning curve low.

This guide explains how to program in VCSSL and is geared towards those already familiar with programming languages. We present the information succinctly and directly in each section, enabling quick comprehension of VCSSL or serving as a reference for specific topics, without being overwhelming. Should you need more detailed explanations, feel free to consult our other guides.

Let's start programming with VCSSL!

Acknowledgement: We greatly appreciate the cooperation of two ChatGPT AIs in translating this guide.
» How we translated this guide

Table of Contents

What is VCSSL? - Features of VCSSL
Introduces the basic features of VCSSL.

Let's Get Started with VCSSL! - Setting Up the Environment
Explains how to set up and use VCSSL environment.

Explains the concept of variables, a fundamental aspect of programming.

Data Types
Introduces various data types that can be handled in VCSSL.

Arithmetic Operations
Explains how to perform arithmetic operations such as addition, subtraction, multiplication, and division on values and variables.

Comparison Operations
Explains how to compare values and variables.

Logical Operations
Explains logical operations, which involve boolean (logical) values.

Explains the concept of scope and blocks, particularly important when dealing with multiple variables of the same name.

Control Structures
Explains control structures, which are used for conditional branching and looping.

Explains arrays, variables that can store multiple values.

Vector Operations
Explains vector operations, which involve operations between arrays.

Explains the concept and usage of functions, an important mechanism for organizing code.

"main" Function
Describes the main function, which serves to organize the overall flow of processing for readability.

System Functions and Constants
Introduces various system functions and constants that provide basic functionality in VCSSL.

Standard File I/O
Explains simple file input/output methods.

Japanese English

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." Delves 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.

Scripting Engine Vnano Ver.1.1 Released: Dramatic Speed Improvement for Repetitive Executions of the Same Content
2023/12/22 - Released the Vnano script engine Ver.1.1. In this version, we've made significant enhancements in processing speed by reducing the overhead of handling requests. Explains the details.

Updated Contents
Circular Wave Animation

Draws the circular wave as 3D animation, under the specified wave parameters.
Sine Wave Animation

Draws the sine wave as animation, under the specified wave parameters.
Tool For Converting Units of Angles: Degrees and Radians

A GUI tool for converting the angle in degrees into radians, or radians into degrees.
Connector Fatal Exception - Specification
The unchecked exception thrown when errors have occurred, caused by incorrect implementations (might be bugs).
Connector Exception - Specification
The checked exception thrown when errors have occurred, cause by expected normal problems.