set name to "Alice"      # Immutable
let counter to 0         # Mutable
let age to 25 as number  # With type annotation

# Conditional
if condition:
    statement

# Pattern matching
match value:
    case 1:
        print "one"
    default:
        print "other"

# For loop
for i in range 1 to 10:
    print i

# For-each loop
for item in items:
    print item

# While loop
while condition:
    statement

function greet with name:
    print f"Hello, {name}!"

call greet with "Alice"

# Default parameters
function greet with name, greeting = "Hello":
    return f"{greeting}, {name}!"

call greet with "Alice"         # Uses default
call greet with "Bob", "Hi"     # Override default

# Variadic parameters
function sum with ...numbers:
    let total to 0
    for n in numbers:
        let total to total plus n
    return total

call sum with 1, 2, 3, 4, 5     # Accepts any number of args

# Named arguments
call create_point with z: 3, x: 1, y: 2

# Multiple return values
function divide with a, b:
    return a divided by b, a mod b

set q, r to call divide with 10, 3

# Variable swapping
let x, y to y, x

set char to text at 0           # Indexing
set slice to text from 0 to 5   # Slicing
set msg to f"Hello, {name}!"    # F-strings
set fmt to f"{price:.2f}"       # Format specifiers

set nums to list 1, 2, 3
set nums2 to [1, 2, 3]
set squares to [x times x for x in range 1 to 6]
print nums at 0                 # Access: 1
let nums at 0 to 10             # Modify

set user to map name: "Alice", age: 30
print user at "name"            # Access
delete user at "age"            # Delete key

import math
import utils from "utils.kr"

try:
    raise "Error"
catch error:
    print error
finally:
    print "Done"

set content to call read_file with "file.txt"
call write_file with "out.txt", "Hello"

call len with items             # Length
call uppercase with text        # "HELLO"
call split with text, ","       # Split string
call sort with numbers          # Sort list
call to_number with "42"        # Parse number

./kronos script.kr    # Run file
./kronos              # Start REPL
./kronos -e "code"    # Execute inline