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!')