test

// 分支条件
even = 0
odd = 0
sum = 0
i = 1
while i < 10 {
    if i % 2 == 0 {     // event number ?
        even = even + i
    } else {
        odd = odd + i
    }
    sum = sum + (i + 1)
    i = i + 1
}
print(even)
print("\n")
print(-odd)
print("\n")

// 字符串数字相加
print("sum = " + sum)
print("\n")
print("Hello " + "World " + sum)
print("\n")

// 函数
def fib(n) {
    if n < 2 {
        n
    } else {
        fib(n - 1) + fib(n - 2)
    }
}
print("fib(10) == " + fib(10))
print("\n")

// 闭包
def add(c) {
    func (x) { c = c + x }
}
print(add(1)(10))
print("\n")
print(c1 = add(1))
print("\n")
print(c1(2))
print("\n")

// 内置函数
print(size("test"))
print("\n")
print("print return " + itoa(print("Hello " + "World!\n")))
print("\n")
print(timestamp())
print("\n")
print(atoi("12345"))
print("\n")

// 数组
print(a = [1, 2, 3, 4, 5])
print("\n")
a[1] = 2
print(a[1])
print("\n")
a[0]
a[4]

// 类
class Animal {
    age = 0
    weight = 100
    c = [1, 3, 5]

    def info() {
        "father info"
    }

    def father() {
        "father test"
    }
}

// 继承
class Dog extends Animal {
    def info() {
        "age = " + age + "; weight = " + weight
    }
}

d = Dog.new
d.age = 1
print(d.info())
print("\n")
print(d.weight)
print("\n")
print(d.father())
print("\n")

d.c
d.info

c = d
print(d)
print("\n")
print(c)
print("\n")

// 终端输入
while 1 {
    print(read())
}