01_习题练习
#1、使用while循环输入1 2 3 4 5 6 8 9 10 count = 0 while count<10: count = count + 1 if count == 7: print(' ') else:print(count) #2、使用while循环输入1 2 3 4 5 6 8 9 10 count = 0 while count<10: count = count + 1 if count == 7: continue else: print(count) #3、输出1-100内所有奇数 #方法一 count = 1 while count < 101: print(count) count = count + 2 #方法二 count = 1 while count < 101: if count % 2 == 1: print(count) count = count + 1 #求1+2+3+4+5....99的所有数的和 sum = 0 count = 1 while count < 100: sum = sum + count count = count + 1 print(sum) #求1-2+3-4+5....99的所有数的和 count = 1 sum = 0 while count < 100: if count % 2 == 0: sum = sum - count else: sum = sum + count count = count + 1 print(sum) #用户登录(三次机会重试) i = 0 while i < 3: username = input('请输入账号:') password = int(input('请输入密码:')) if username == '张三' and password == 123 : print('登录成功') else: print('登录失败') i = i + 1 注意:中英文区分;“=”代表赋值、“==”代表等于