這篇文為測試文章

Headings

H1 Heading

H2 Heading

H3 Heading

H4 Heading

H5 Heading

H6 Heading

Text Formatting

Bold Text

Italic Text

Bold and Italic Text

Strikethrough

"This is a blockquote used for testing."

Inline code example.

Lists

Unordered List

• Item 1
  • Subitem 1.1
  • Subitem 1.2
• Item 2

Ordered List

1. First Item
2. Second Item
   1. Subitem 2.1
   2. Subitem 2.2

Links and Images

Links

OpenAI

Images

Code Blocks

Inline Code

Use printf("Hello, World!"); in C for basic output.

Block Code

# Python example
for i in range(5):
    print("Hello, World!")
<!-- HTML example -->
<div class="container">
    <p>Hello, World!</p>
</div>

Blockquotes

Markdown is a lightweight markup language with plain-text formatting syntax.

$x = \frac{F(s)}{dt}$