day04作业

1.使用while循环输出1 2 3 4 5 6     8 9 10

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

2.求1-100的所有数的和

1 num = 1
2 summing = 0
3 while num < 101:
4     summing+=num
5     num+=1
6 print(summing)

3.输出 1-100 内的所有奇数

1 num = 1
2 while num < 101:
3     if num%2 ==1:
4         print(num)
5     num+=1

4.输出 1-100 内的所有偶数

1 num = 1
2 while num < 101:
3     if num%2 ==0:
4         print(num)
5     num+=1

5.求1-2+3-4+5 ... 99的所有数的和

 1 num = 1
 2 summing = 0
 3 while num <100:
 4     if num % 2 ==1:
 5         summing+=num
 6     else:
 7         num = -num
 8         summing+=num
 9         num =-num
10     num += 1
11 print(summing)

6. 用户登陆（三次机会重试）

 1 count = 0
 2 while count<3:
 3     name = input('请输入你的用户名：')
 4     pwd = input('请输入你的密码：')
 5     if name == 'egon' and pwd == '123':
 6         print('login successful')
 7         break
 8     else:
 9         print('name or passward error')
10         count+=1
11 else :
12     print('尝试次数太多')

7：猜年龄游戏
要求：
    允许用户最多尝试3次，3次都没猜对的话，就直接退出，如果猜对了，打印恭喜信息并退出

 1 count = 0
 2 tag = True
 3 while tag:
 4     if count<3:
 5         age = input('猜猜看我的年纪：')
 6         age = int(age)
 7         if age == 25:
 8             print('猜对了，恭喜')
 9             tag = False
10         else:
11             print('猜错了，请继续')
12             count+=1
13             continue
14     tag = False

8：猜年龄游戏升级版 
要求：
    允许用户最多尝试3次
    每尝试3次后，如果还没猜对，就问用户是否还想继续玩，如果回答Y或y, 就继续让其猜3次，以此往复，如果回答N或n，就退出程序
    如何猜对了，就直接退出

count = 0
tag = True
while tag:
    if count<3:
        age = input('猜猜看我的年纪：')
        age = int(age)
        if age == 25:
            print('猜对了，恭喜')
            tag = False
        else:
            print('猜错了，请继续')
            count+=1
    else:
        while tag:
            user_inp = input('是否继续猜？Y/N')
            if user_inp == 'y'or user_inp =='Y':
                count=0
                break
            elif user_inp=='n'or user_inp=='N':
                print('谢谢，结束了')
                tag = False
            else:
                print('请按要求输入')

九九乘法表

for i in range(1,10):
    for j in range(1,i+1):
        print('%s * %s = %s'%(j,i,i*j),end='   ')
    print()

结果：

1 * 1 = 1
1 * 2 = 2 2 * 2 = 4
1 * 3 = 3 2 * 3 = 6 3 * 3 = 9
1 * 4 = 4 2 * 4 = 8 3 * 4 = 12 4 * 4 = 16
1 * 5 = 5 2 * 5 = 10 3 * 5 = 15 4 * 5 = 20 5 * 5 = 25
1 * 6 = 6 2 * 6 = 12 3 * 6 = 18 4 * 6 = 24 5 * 6 = 30 6 * 6 = 36
1 * 7 = 7 2 * 7 = 14 3 * 7 = 21 4 * 7 = 28 5 * 7 = 35 6 * 7 = 42 7 * 7 = 49
1 * 8 = 8 2 * 8 = 16 3 * 8 = 24 4 * 8 = 32 5 * 8 = 40 6 * 8 = 48 7 * 8 = 56 8 * 8 = 64
1 * 9 = 9 2 * 9 = 18 3 * 9 = 27 4 * 9 = 36 5 * 9 = 45 6 * 9 = 54 7 * 9 = 63 8 * 9 = 72 9 * 9 = 81

#金字塔

1 max_level = 10
2 for i in range(1,max_level+1):
3     print(' '*(max_level-i)+'*'*(2*i-1))