1、使用while循环输入 1 2 3 4 5 6 8 9 10
count = 1
while count< 11:
if count == 7:
count+=1
continue
print(count)
count+=1
2、求1-100的所有数的和
counts = 1
num = 0
while counts <101:
num +=counts
counts+=1
print(num)
3、输出 1-100 内的所有奇数
counte = 1
while counte < 101:
if counte % 2 == 1:
print(counte)
counte+=1
4、输出 1-100 内的所有偶数
counte = 1
while counte < 101:
if counte % 2 != 1:
print(counte)
counte+=1
5、求1-2+3-4+5 ... 99的所有数的和
counte = 1
num = 0
num1 = 0
while counte < 100:
if counte % 2 != 1:
num += -counte
else:
num1 += counte
counte+=1
print(num+num1)
6、用户登陆(三次机会重试)
count = 0
while count<3:
count +=1
username = input("username:")
password = input("password:")
if username == 'alex' and password == '123456':
print('登陆成功!')
break
else:
print('请重试!')