一、使用while循环输出1、2、3、4、5、6 8、9、10
count = 0
while count<10:
count += 1
if count==7:
continue
print(count)
二、1-100的所有数之和
count = 1
sum = 0
while count <= 100:
sum = sum +count
count += 1
print(sum)
三、输出1-100的所有奇数
count = 1
while count <= 100:
if count%2!=0:
print(count)
count+=1
四、输出1-100的所有偶数
count = 1
while count <= 100:
if count%2==0:
print(count)
count += 1
五、输出1+2+3+...+99的和
count = 1
sum = 0
while count <= 99:
sum = count + sum
count += 1
print(sum)
六、用户登录,三次机会
count = 0
username = "Andraw_Wu"
password = "123"
while count <= 2:
_username = input("输入用户名")
_password = input("输入密码")
if username == _username and password == _password:
print("登陆成功")
break
else:
print('登录失败')
count += 1
else:
print("登录次数过多,只可登录三次")