#1. 使用while循环输出1 2 3 4 5 6 8 9 10
i =1
while i <11:
if i ==7:
i +=1
continue
print(i)
i +=1
#2. 求1-100的所有数的和
i =1
sum =0
while i <100:
sum += i
print("结果为%s"%sum)
i +=1
#3. 输出 1-100 内的所有奇数
for iin range(1,101):
if i %2 ==1:
print(i)
i =1
while i <100:
if i %2 ==1:
print(i)
i +=1
#4. 输出 1-100 内的所有偶数
i =1
while i <100:
if i %2 ==0:
print(i)
i +=1
for iin range(1,100):
if i %2 ==0:
print(i)
#5. 求1-2+3-4+5 ... 99的所有数的和
i =0
for iin range(100):
if i %2 ==0:
i -= i
else:
i += i
print(i)
#6. 用户登陆（三次机会重试）
user ="Anna"
coded ="123456"
count =1
while count <=3:
user1 =input("请输入姓名:")
coded1 =input("请输入密码:")
if user == user1and coded1 == coded:
print("登陆成功")
break
else:
count +=1
if count ==3:
print("连输入错误三次，退出程序")
break
#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
while count <=3:
guess =int(input("请输入年龄:"))
if guess == age:
print("猜对了")
break
else:
count +=1
print("猜错了")
else:
print("猜错三次，程序退出")
