s5_day1作业
Posted When you look into the abyss,
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#1、使用while循环输出1 2 3 4 5 6 8 9 10 # s=0 # while s<10: # s+=1 # if s==7: # continue # print(s) # for i in range(1,11): # if i==7: # continue # print(i) # i += 1 #2、求1-100的所有数的和 # s=0 # i=0 # while i<100: # i+=1 # s+=i # print(s) # s=0 # for i in range(1,101): # s+=i # print(s) #3、输出 1-100 内的所有奇数 # s=0 # while s<100: # s+=1 # if s%2==1: # print(s) # for i in range(1,101): # if i%2==1: # print(i) #4、输出 1-100 内的所有偶数 # s=0 # while s<100: # s+=1 # if s%2==0: # print(s) # for i in range(1,101): # if i%2==0: # print(i) #5、求1-2+3-4+5 ... 99的所有数的和 # s=0 # i=1 # while i<100: # if i%2==1: # s+=i # elif i%2==0: # s-=i # i+=1 # print(s) # s=0 # for i in range(1,100): # if i%2==1: # s+=i # elif i%2==0: # s-=i # print(s) #6、用户登陆(三次机会重试) # count=0 # while count<3: # name=input(‘请输入用户名 ‘) # passwd=input(‘请输入密码 ‘) # if name==‘z‘ and passwd==‘123‘: # print(‘登录成功‘) # break # else: # print(‘用户名密码错误‘) # count+=1 # 改进版 # user=‘z‘ # pwd=‘123‘ # count=0 # while count<3: # username=input(‘请输入用户名 ‘) # if username == user: # passwd=input(‘请输入密码 ‘) # if passwd==pwd: # print(‘登陆成功‘) # break # else: # print(‘密码错误,请重新输入‘) # continue # else: # count += 1 # print(‘用户名错误,请重新输入‘) # else: # print(‘您输错了3次,已锁定‘)
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