Makefile

CC=gcc
CFLAGS=-I.

hello: hello.o
	$(CC) -o hello hello.o

hello.o: hello.c
	$(CC) -c hello.c $(CFLAGS)

clean:
	rm -f *.o hello

Markdown

# Markdown Document

## Introduction
This is a *sample* markdown document to demonstrate various markdown elements.

## Formatting Text
- **Bold Text**: `**Bold Text**`
- *Italic Text*: `*Italic Text*`
- `Inline Code`: `` `Inline Code` ``

## Lists
### Unordered List
- Item 1
- Item 2
  - Subitem 2.1
  - Subitem 2.2

### Ordered List
1. First Item
2. Second Item
   1. Subitem 2.1
   2. Subitem 2.2

## Links and Images
[OpenAI Website](https://www.openai.com)

![Sample Image](https://example.com/image.jpg)

## Code Block
```python
def hello_world():
    print("Hello, world!")
```

Objective-C

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        // Insert code here...
        NSLog(@"Hello, World!");
    }
    return 0;
}

Perl

use strict;
use warnings;

# Open a file
open(my $fh, "<", "sample.txt") or die "Cannot open file: $!";

# Read and print each line from the file
while (my $line = <$fh>) {
    print $line;
}

# Close the file
close($fh);

PHP

<?php
// Define an array
$fruits = array("apple", "banana", "cherry");

// Add an item to the array
array_push($fruits, "date");

// Print all items in the array
foreach ($fruits as $fruit) {
    echo $fruit . PHP_EOL;
}
?>

PHP Template

<!DOCTYPE html>
<html>
<head>
    <title>PHP Template Sample</title>
</head>
<body>
    <h1>Welcome to My Website</h1>
    <?php
    echo "<p>Today's date is " . date("Y-m-d") . "</p>";
    ?>
</body>
</html>

Plaintext

This is a sample plaintext document.
It contains only basic text, with no formatting.

- List Item 1
- List Item 2
- List Item 3

Plain text can be used for simple notes or documents.

Python

def add(x, y):
    """Add Function"""
    return x + y

def subtract(x, y):
    """Subtract Function"""
    return x - y

def multiply(x, y):
    """Multiply Function"""
    return x * y

def divide(x, y):
    """Divide Function"""
    if y == 0:
        return "Division by zero error"
    return x / y

# Test the functions
num1 = 10
num2 = 5

print(f"{num1} + {num2} = {add(num1, num2)}")
print(f"{num1} - {num2} = {subtract(num1, num2)}")
print(f"{num1} * {num2} = {multiply(num1, num2)}")
print(f"{num1} / {num2} = {divide(num1, num2)}")

Python REPL

>>> # Define a simple function
>>> def greet(name):
...     return f"Hello, {name}!"
... 
>>> # Call the function with a name
>>> greet("Alice")
'Hello, Alice!'
>>> 
>>> # Perform a simple calculation
>>> 3 * 4 + 5
17
>>> 
>>> # List comprehension example
>>> [x**2 for x in range(5)]
[0, 1, 4, 9, 16]
>>>

R

# Load necessary library
library(ggplot2)

# Create sample data
data <- data.frame(
  category = c('A', 'B', 'C', 'D', 'E'),
  value = c(3, 7, 8, 5, 4)
)

# Plot the data
ggplot(data, aes(x=category, y=value)) + 
  geom_bar(stat='identity') +
  ggtitle('Sample Bar Chart') +
  xlab('Category') +
  ylab('Value')

Ruby

# Create an array of fruits
fruits = ["apple", "banana", "cherry"]

# Add an item to the array
fruits.push("date")

# Print each fruit in the array
fruits.each do |fruit|
  puts fruit
end

Rust

fn main() {
    // Create a vector of integers
    let mut numbers = vec![1, 2, 3, 4, 5];

    // Add an element to the vector
    numbers.push(6);

    // Iterate over the vector and print each value
    for number in numbers.iter() {
        println!("Number: {}", number);
    }
}

Scala

// 'SampleClass' is a class which takes a name as a string parameter.
class SampleClass(val name: String) {
  
  // 'sayHello' is a method which prints a greeting to the console. 
  def sayHello() = {
    println(s"Hello, $name")
  }
}

object Main {
  def main(args: Array[String]): Unit = {
    val myClass = new SampleClass("Scala")
    myClass.sayHello()
  }
}

SCSS

$primary-color: #4CAF50;
$text-color: #fff;
$hover-color: darken($primary-color, 10%);

nav {
  background: $primary-color;
  ul {
    list-style: none;
    padding: 0;
    margin: 0;
    li {
      display: inline;
      a {
        text-decoration: none;
        color: $text-color;
        padding: 10px 15px;
        &:hover {
          background: $hover-color;
        }
      }
    }
  }
}

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