i = 1
while i <= 5:
    print(i)
    i += 1

while True:
    x = input("輸入 'stop' 來停止循環(huán): ")
    if x == 'stop':
        break

i = 0
while i < 10:
    i += 1
    if i % 2 != 0:
        continue
    print(i)

i = 1
while i <= 5:
    print(i)
    i += 1
else:
    print("循環(huán)已完成")

num = int(input("輸入一個數字: "))
factorial = 1
i = 1

while i <= num:
    factorial *= i
    i += 1

print(f"{num} 的階乘是 {factorial}")

num = int(input("輸入一個數字："))
a, b = 0, 1
while b < num:
    print(b)
    a, b = b, a + b

fruits = ["蘋果", "香蕉", "櫻桃", "葡萄"]
i = 0
while i < len(fruits):
    print(fruits[i])
    i += 1

import random

print("歡迎來到石頭剪刀布游戲！")
options = ["石頭", "剪刀", "布"]
computer_choice = random.choice(options)

while True:
    player_choice = input("請輸入石頭、剪刀或布：")
    if player_choice not in options:
        print("輸入無效，請重新輸入。")
        continue
    print(f"電腦的選擇是：{computer_choice}")
    if player_choice == computer_choice:
        print("平局！")
    elif (player_choice == "石頭" and computer_choice == "剪刀") or (player_choice == "剪刀" and computer_choice == "布") or (player_choice == "布" and computer_choice == "石頭"):
        print("你贏了！")
    else:
        print("你輸了！")
    break

import random

print("歡迎來到猜數字游戲！")
number = random.randint(1, 20)
guesses = 0

while guesses < 6:
    guess = int(input("請輸入一個數字："))
    guesses += 1
    if guess < number:
        print("你猜的數字太小了。")
    elif guess > number:
        print("你猜的數字太大了。")
    else:
        print(f"恭喜你，你猜對了！你用了 {guesses} 次猜中了數字。")
        break
else:
    print(f"很遺憾，你沒有猜中數字。數字是 {number}。")

import random

print("歡迎來到加法練習！")
correct_answers = 0
total_questions = 0

while True:
    num1 = random.randint(1, 10)
    num2 = random.randint(1, 10)
    answer = int(input(f"{num1} + {num2} = "))
    total_questions += 1
    if answer == num1 + num2:
        correct_answers += 1
        print("回答正確！")
    else:
        print("回答錯誤。")
    if input("是否繼續(xù)？（y/n）") == "n":
        break

print(f"你回答了 {total_questions} 道題目，其中 {correct_answers} 道題目回答正確。")

import time

countdown = 10
while countdown > 0:
    print(countdown)
    time.sleep(1)
    countdown -= 1

print("時間到！")

i = 1
while i <= 5:
    print("*" * i)
    i += 1

counter = 0
while True:
    print(counter)
    counter += 1
    if counter == 10:
        break

password = "bazinga"
while True:
    attempt = input("請輸入密碼：")
    if attempt == password:
        print("密碼正確！")
        break
    else:
        print("密碼錯誤，請重試。")

with open("example.txt") as f:
    line = f.readline()
    while line:
        print(line.strip())
        line = f.readline()

with open("example.txt", "w") as f:
    while True:
        line = input("請輸入一行文本：")
        if line == "quit":
            break
        f.write(line + "\\n")

text = "Hello, World!"
reversed_text = ""
i = len(text) - 1
while i >= 0:
    reversed_text += text[i]
    i -= 1

print(reversed_text)

fruits = ["蘋果", "香蕉", "櫻桃", "葡萄"]
reversed_fruits = []
i = len(fruits) - 1
while i >= 0:
    reversed_fruits.append(fruits[i])
    i -= 1

print(reversed_fruits)

text = "Hello, World!"
substring = ""
start = 7
end = 12
i = start
while i < end:
    substring += text[i]
    i += 1

print(substring)

fruits = ["蘋果", "香蕉", "櫻桃", "葡萄"]
sliced_fruits = []
start = 1
end = 3
i = start
while i < end:
    sliced_fruits.append(fruits[i])
    i += 1

print(sliced_fruits)

#include <stdio.h>
int main (void)
{
	int i=0;     //定義初始值數
	int a,b,c;     //定義個位數百位數
	while( i<=999)  //條件
	{
		//開始拆解個位、十位、百位；
		a = i/100;   //百位
		b = i/10%10; //十位
		c = i%10;    //個位
		if (a*a*a+b*b*b+c*c*c == i)  //if語句判斷條件
		{
			printf("水仙花：%d\n",i); //為真輸出語句塊
		}
		i++;   //再計算i,后面返回while
	}
	return 0;
}