作业(必做题):
1.使用while循环输出1 2 3 4 5 6 8 9 10
i = 0
while i < 10:
i += 1
if i == 7:
continue
print(i)
2.求1-100的所有数的和
i = 1
sum = 0
while i <= 100:
sum += i
i +=1
print(sum)
3.输出 1-100 内的所有奇数
i = 1
while i < 100:
print(i)
i += 2
4.输出 1-100 内的所有偶数
i = 0
while i < 100:
i += 2
print(i)
5.求1-2+3-4+5 ... 99的所有数的和
single = 1
double = -2
sum = 0
while single < 100:
single += 2
sum = sum + single + double
double -= 2
print(sum)
6.用户登陆(三次机会重试)
username = 'xxq'
password = '123'
count = 0
rest = 3
while count < 3:
inp_name = input('请输入帐号:')
inp_pwd = input('请输入密码:')
if inp_name == username and inp_pwd == password:
print('登录成功!')
break
else:
count += 1
rest -= 1
print('您已输错',count,'次')
print('您还剩余',rest,'次')
else:
print('输错3次,退出程序')
7.猜年龄游戏
要求:允许用户最多尝试3次,3次都没猜对的话,就直接退出,如果猜对了,打印恭喜信息并退出
age = 18
count = 0
rest = 3
while count < 3:
inp_age = input('请输入猜测的年龄:')
if inp_age.isdigit():
inp_age = int(inp_age)
if inp_age == age:
print('恭喜你!猜对啦!')
break
else:
count += 1
rest -= 1
print('您已猜错',count,'次')
print('您还剩余',rest,'次')
else:
print('请输入数字')
else:
print('输错3次,退出程序')
8.猜年龄游戏升级版(选做题)
要求:允许用户最多尝试3次,每尝试3次后,如果还没猜对,就问用户是否还想继续玩,如果回答Y或y, 就继续让其猜3次,以此往复,如果回答N或n,就退出程序,如果猜对了,就直接退出
age = 18
count = 0
while count < 3:
inp_age = input('请输入猜测的年龄:')
if inp_age.isdigit():
inp_age = int(inp_age)
count += 1
if inp_age == age:
print('恭喜你!猜对啦!')
break
elif count == 3:
msg = input("是否继续 Y/y or N/n: ")
if msg == "y" or msg == "Y":
print("再来亿次")
count = 0
continue
elif msg == "N" or msg == "n":
print("GG了")
break
else:
print("错了,再来")
else:
print('错',count,'次了')
else:
print('请输入数字')