Day-1作业

1.输出 1，2，3，4，5，6，8，9，10

 

count = 0
while count < 10:
    count = count + 1
    if count == 7:
        continue
    print(count)

 

 2. 1-100 所有数的和

count = 1
sum = 0

while count <= 100:
    sum = sum + count
    count = count + 1
    print(sum)

 3. 输出1-100内所有奇数

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

 

4. 输出1-100内所有偶数

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

 

5. 求1-2+3-4+5....99的所有数的和

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

 

6.用户登录（三次机会重试）

 

count = 3
while count > 0:
    name = input('请输入你的名字：')
    password = input('请输入你的密码：')
    if  name == '张三'and password == '123456':
        print('恭喜你登陆成功')
    else:
        print('登陆失败，请重新登陆')
    count = count - 1