**Table of Contents**

1. [Heading 1](#heading-1)

2. [Heading 2](#heading-2)

3. [Heading 3](#heading-3)

## Heading 1

This is an example of using [inline links](http://www.example.com) and [inline image]() in CommonMark Markdown.

## Heading 2

This is an example of using a block quote:

> This is a block quote. It can be used to explain, elaborate, or emphasize a point.

## Heading 3

This is an example of using a code block:

```

int main() {

printf("Hello, world!");

return 0;

}

```