作业2

1. 使用while循环输出1 2 3 4 5 6 8 9 10

count=1
while count <= 10:
    if count == 7:
        count+=1
        continue
    print(count)
    count+=1

2. 求1-100的所有数的和

n=0
count=1
while count <= 100:
    res+=count
    count+=1
print(n）

3. 输出 1-100 内的所有奇数

count=0
while count <= 100:
    if count%2 == 1:
        print(count)
    count+=1

4. 输出 1-100 内的所有偶数

count=1
while count <= 100:
    if count%2 == 0:
        print(count)
    count+=1

5. 求1-2+3-4+5 ... 99的所有数的和

res=0
count=1
while count <= 5:
    if count%2 == 0:
        res-=count
    else:
        res+=count
    count+=1

print(res)

6. 用户登陆（三次机会重试）

while count < 3:
    name=input('请输入用户名：')
    password=input('请输入密码：')
    if name == 'egon' and password == '123':
        print('login success')
        break
    else:
        print('用户名或者密码错误')
        count+=1

7：猜年龄游戏

age=18

count=0
while count < 3:
    n=int(input('>>: '))
    if n == age:
        print('恭喜你答对了')
        break
    count+=1

8：猜年龄游戏升级版

age=18

count=0
while True:
    if count == 3:
        h=input('继续（Y/N？)>>')
        if h == 'Y' or h == 'y':
            count=0
    else:
        break
    n=int(input('>>: '))
    if n == age:
        print('恭喜你答对了')
        break
    count+=1