1
print "Hello, World!"

1
// 这是一个注释
2
print "Hello"  // 这也是注释

1
name = "Alice"
2
age = 25
3
price = 19.99
4
is_student = true

1
x = 10       note: 整数
2
x = "hello"  note: 现在是字符串

1
count = 42
2
score = -10

1
pi = 3.14159
2
temperature = -5.5

1
greeting = "Hello, World!"
2
empty = ""

1
letter = 'A'
2
digit = '7'

1
is_active = true
2
is_done = false

1
a = 10
2
b = 3
3

4
sum = a + b        note: 加法，结果 13
5
diff = a - b       note: 减法，结果 7
6
product = a * b    note: 乘法，结果 30
7
quotient = a / b   note: 除法，结果 3.333...
8
remainder = a % b  note: 取模，结果 1

1
x = 10
2
y = 20
3

4
x = y              note: 等于（注意：用单等号）
5
x != y             note: 不等于
6
x > y              note: 大于
7
x < y              note: 小于
8
x >= y             note: 大于等于
9
x <= y             note: 小于等于

1
a = true
2
b = false
3

4
a and b            note: 与，结果 false
5
a or b             note: 或，结果 true
6
not a              note: 非，结果 false

1
age = 18
2

3
if age >= 18 then
4
    print "You are an adult"
5
end if

1
score = 85
2

3
if score >= 90 then
4
    print "Grade: A"
5
else if score >= 80 then
6
    print "Grade: B"
7
else if score >= 70 then
8
    print "Grade: C"
9
else
10
    print "Grade: F"
11
end if

1
i = 1
2

3
while i <= 5 do
4
    print "Count:", i
5
    i = i + 1
6
end while

1
repeat 3 times
2
    print "Hello!"
3
end repeat

1
for i from 1 to 5
2
    print i
3
end for

1
note: 从 10 倒数到 1
2
for i from 10 to 1 step -1
3
    print i
4
end for

1
function greet takes name
2
    print "Hello,", name
3
end function
4

5
function add takes a, b
6
    return a + b
7
end function

1
greet("Alice")
2

3
result = add(5, 3)
4
print result  note: 输出 8

1
function factorial takes n
2
    if n <= 1 then
3
        return 1
4
    else
5
        return n * factorial(n - 1)
6
    end if
7
end function
8

9
print factorial(5)  note: 输出 120

1
print "Hello"
2
print "The answer is", 42
3
print 1, 2, 3, 4, 5

1
input "What's your name?" into name
2
print "Hello,", name

1
text = "Hello"
2
len = length(text)
3
print len  note: 输出 5

1
str = "123"
2
num = to_number(str)
3
print num + 1  note: 输出 124

1
num = 42
2
str = to_string(num)
3
print "Number: " + str

1
note: 生成 1 到 10 之间的随机数
2
dice = random(1, 10)
3
print "Random number:", dice

1
print "Waiting..."
2
sleep(2)  note: 等待 2 秒
3
print "Done!"

1
exit(0)  note: 正常退出
2
exit(1)  note: 错误退出

1
note: 简单的计算器程序
2

3
print "PureEnglish Calculator"
4
print "----------------------"
5

6
input "Enter first number: " into a_str
7
input "Enter operator (+, -, *, /): " into op
8
input "Enter second number: " into b_str
9

10
a = to_number(a_str)
11
b = to_number(b_str)
12

13
if op = "+" then
14
    result = a + b
15
else if op = "-" then
16
    result = a - b
17
else if op = "*" then
18
    result = a * b
19
else if op = "/" then
20
    result = a / b
21
else
22
    print "Unknown operator!"
23
    exit(1)
24
end if
25

26
print "Result:", result

1
note: 猜数字游戏
2

3
print "Welcome to Guess the Number!"
4
print "I'm thinking of a number between 1 and 100"
5

6
secret = random(1, 100)
7
attempts = 0
8

9
while true do
10
    input "Take a guess: " into guess_str
11
    guess = to_number(guess_str)
12
    attempts = attempts + 1
13

14
    if guess < secret then
15
        print "Too low!"
16
    else if guess > secret then
17
        print "Too high!"
18
    else
19
        print "Congratulations! You guessed it in", attempts, "attempts!"
20
        exit(0)
21
    end if
22
end while

1
note: 计算斐波那契数列
2

3
function fib takes n
4
    if n <= 1 then
5
        return n
6
    else
7
        return fib(n - 1) + fib(n - 2)
8
    end if
9
end function
10

11
print "Fibonacci sequence:"
12
for i from 0 to 10
13
    print "fib(", i, ") =", fib(i)
14
end for

1
note: 冒泡排序算法（使用数组模拟）
2

3
print "Bubble Sort Demo"
4
print "----------------"
5

6
note: 我们将使用多个变量来模拟数组
7
a0 = 64
8
a1 = 34
9
a2 = 25
10
a3 = 12
11
a4 = 22
12
a5 = 11
13
a6 = 90
14

15
print "Original array:"
16
print a0, a1, a2, a3, a4, a5, a6
17

18
note: 简化的冒泡排序演示
19
print "Note: Full array operations require extended features"
20
print "See examples directory for more complex programs"