# Markdown Code
## Inline Code
For a function or short code snippet within a paragraph, wrap it with backticks (`` ` ``).

**Example:**

    `printf()` function
    
`printf()` function

## Special Character Escaping
**How to display backticks:**
Use double backticks to wrap single backticks:  
`` Use `backticks` to wrap code ``  
**Rendered result:**  
Use `backticks` to wrap code   
Use multiple backticks to wrap:  
``` ``Code with double backticks`` ```
## Code Blocks
### Indented Code Blocks
A code block can be created with **4 spaces** or one **Tab** at the start of each line.

**Syntax:**
Normal text paragraph

    This is an indented code block
    Four spaces before each line
    Preserves original formatting

Continue normal text
**Important:Indented code blocks require blank lines before and after**  

### Fenced Code Blocks (Triple Backticks)
You can also wrap code with `` ``` `` and optionally specify a language.

```python
print("hello world!")
```

## Notes
- Requires 8 spaces indentation when used inside lists.

## Language Identification & Syntax Highlighting
Add a language identifier after triple backticks to enable syntax highlighting.

**Common language identifiers:**
- `javascript` / `js` – JavaScript
- `python` / `py` – Python
- `html` – HTML
- `css` – CSS
- `sql` – SQL
- `json` – JSON
- `xml` – XML
- `yaml` / `yml` – YAML
- `bash` / `shell` – Shell script
- `java` – Java
- `cpp` / `c++` – C++
- `csharp` / `c#` – C#
- `php` – PHP
- `ruby` / `rb` – Ruby
- `go` – Go
- `rust` – Rust
- `typescript` / `ts` – TypeScript

### Code Diff (Difference Comparison)
Used to show added, deleted, or modified code, common in version control.

**Diff syntax:**
```diff
function calculateTotal(items) {
-   let total = 0;
+   let total = 0.0;

    for (let item of items) {
-       total += item.price;
+       total += parseFloat(item.price);
    }

+   // Keep two decimal places
+   total = Math.round(total * 100) / 100;
    return total;
}
```

**Git-style diff:**
```diff
@@ -1,5 +1,8 @@
 function greetUser(name) {
-    console.log("Hello " + name);
+    if (!name) {
+        throw new Error("Name is required");
+    }
+    console.log(`Hello, ${name}!`);
 }
```