Little Night yuan Exercise 4

1. The while loop output 1234568910

Code:

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

effect:

2. All numbers 1-100 and seek

Code:

s=0
i=0
while i<=100:
    s+=i
    i+=1
print(s)

effect:

3. The outputs of all the odd-numbered 1-100

Code:

i=0
while i<100:
    i = i + 1
    if i%2!=0:
     print(i,end=" ")

effect:

4. Output all even within 1-100

Code:

i=0
while i<100:
    i = i + 1
    if i%2==0:
     print(i,end=" ")

effect:

​ ​

The request and all numbers 1-2 + 3-4 + 5 ... 99

Code:

s=0
i=1
while i<=99:
    r=pow(-1,i+1)
    s+=r*i
    i+=1
print(s)

effect:

6. User Login (three chances to retry)

Code:

old_name='king'
old_password='123'
count=0
while count<3:
    name = input("请输入你的姓名：")
    password = input("请输入你的密码：")
    if name==old_name and password==old_password:
        print("登录成功！")
        break
    else:
        print("请输入正确的密码或姓名！")
    count+=1

effect:

​

​

7: Guess the age of the game

Code:

old_age="20"
count=0
while count<3:
    age = input("请输入你的猜测的年龄：")
    if age==old_age:
        print("太棒了！猜测正确！")
        break
    else:
        print("好可惜！猜错了！")
    count+=1

effect:

8: Guess the age of an upgraded version of the game (OPTIONAL)

Code:

old_age="20"
count=0
while count<3:
    age = input("请输入你的猜测的年龄：")
    if age==old_age:
        print("太棒了！猜测正确！")
        break
    else:
        print("好可惜！猜错了！")
    count+=1
    if count==3:
        choice=input("你还想继续猜吗？y/n")
        if choice=="y":
            count=0
            continue
        else:
            break

effect:

9.for print circulation 99 multiplication table

Code:

for i in range(1,10):
    for j in range(1,i+1):
        print(f'{j}*{i}={(i*j): ^2}',end=' ')
    print("")

effect:

10.for circulation print pyramid

Code:

for i in range(1,6):
    print(f'{"*"*(2*i-1): ^9}')

effect: