1.使用while循环输入1 2 3 4 5 6 ... 8 9 10

#6.用户登陆 （三次机会重试）
#input() 心数要有账号，密码 while

i = 0
while i < 3:
    username = input("请输入账号：")
    password = int(input("请输入密码："))
    if username == "咸鱼哥" and password == 123:
        print("登陆成功")
        break
    else:
        print("登陆失败，请重新登陆")
    i += 1

 

#5.求1-2+3-4+5...99的所有数的和
# sum = 0
# count = 1
# while count <= 100:
#     sum += count  #sum = sum + count
#     count += 1  #count =count + 1
# print(sum)

sum = 0
count = 1
while count < 100:
    if count % 2 == 0:
        sum = sum - count
    else:
        sum += count  #sum = sum + count
    count += 1  #count =count + 1
print(sum)

 

#3.输出 1-100 内的所有奇数
"""
#方法一：
count = 1
while count < 101:
    print(count)
    count += 2
"""
#方法二:
count = 1
while count < 101:
    if count % 2 ==1:
        print(count)
    count += 1

 

count = 0
while count < 10:
    count += 1  # count = count + 1
    if count == 7:
        pass
    else:
        print(count)

 

#1.使用while循环输入1 2 3 4 5 6 ... 8 9 10
count = 0
while count < 10:
    count += 1 # 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 += 1  # count = count + 1
    if count == 7:
        print(" ")
    else:
        print(count)
"""
count = 0
while count < 10:
    count += 1  # count = count + 1
    if count == 7:
        continue
    print(count)