1.求1-100的总和

1 count = 02 int = 03 while count < 100:4     count += 15     #print(count)6     int += count7     print(int)

2.使用while循环输出1 2 3 4 5 6 8 9 10

1 count = 02 while count < 10:3     count += 14     if count == 7:5         continue #到循环首，不执行下方代码6     print(count)

1 count = 02 while count < 10:3     count += 14     if count == 7:5         pass #跳过6     else:7         print(count)

3.取奇数偶数

count = 0while count < 100:    count += 1    if count % 2 == 0:        print('偶数：'+  str(count))    else:        #pass        print('奇数：'+  str(count))

count = 1while count < 100:    print(count)    count += 2

 4.1-2+3-4+5-6。。。。99的总和

sum = 0count = 0while count < 99:    count += 1    #print(count)    if count % 2 == 0:        sum -= count #如果为偶数就减    else:        sum += count #如果为奇数就+print(sum)#最后结果为50

5.3次机会猜数字游戏

print('接下来我们进行一个猜数字的游戏')print('你共有3次机会，猜出我心中所想的1-10其中一个')count = 0while count < 3:    ni = int(input('请输入1-10其中一个数字：'))    if ni == 8:        print('恭喜你猜对了！')        break    else:        print('猜错了！你还有' + str(2-count) + '次机会')    count += 1

count = 0while count < 3:    username = input('请输入账号：')    password = input('请输入密码：')    if username == '陈俊' and password == '123':        print('登录成功！')        break    elif count == 2:        print('错误次数超过3次!')    else:        print('登录失败,请检查！你还有' + str(2-count) + '次输入机会!')    count += 1