基础编程练习题第一波

1、使用while输入1 2 3 4 5 6  8 9 10

1 count = 1
2 while count < 11:    
3     if count != 7:
4         print(count)    
5     count = count + 1
1版
1 count = 1
2 while count < 11:
3     if count == 7:
4         count = count + 1
5         continue
6     print(count)
7     count = count + 1
2版

2、求1-100所有数 的和

1 i = 0
2 sum = 0
3 while i < 101:
4     sum = sum + i
5     i = i + 1
6     print(i)
7     print(sum)
8 print(sum)
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3、输出1-100内的所有奇数、偶数

1 i = 1
2 while i < 101:
3     if i % 2 == 0:
4         print(i)
5     i = i + 1
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4、求1-2+3—4+5...99所有数的和

 1 i = 1
 2 sum1 = 0
 3 sum2 = 0
 4 while i < 100:
 5     if i % 2 == 0:
 6         sum1 = sum1 -i
 7     else:
 8         sum2 = sum2 + i
 9     i = i + 1
10 print(sum1 + sum2)
1版
 1 i = 0 
 2 s = 0
 3 while i < 100:
 4     temp = i % 2
 5     if temp == 0:
 6         s = s - i
 7     else:
 8         s = s + i
 9     i = i + 1
10 print(s)
2版

5、用户登录（三次重试机会）

 1 i = 1
 2 while i < 4:
 3     name = input('请输入用户名:')
 4     password = input('请输入密码:')
 5     if  name == 'root' and password == 'root':
 6         print('登录成功')
 7         break
 8     elif i < 3:
 9         print('请重试')
10     elif i == 3:
11         print("稍后重试")
12     i = i + 1
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posted @ 2018-03-15 19:37  JerryZao  阅读(158)  评论(0)  编辑  收藏  举报