3.18 DAY1

#1.使用while循环输入123456 8 9 10
count=0
while count < 10:
	count = count + 1
	if count == 7:
		continue
	print(count)

#2.求1-100所有数的和
a = 0
sum = 0
while a < 100:
    a += 1
    sum += a
print(sum)

 

#3.输出1-100所有奇数
a = 1
while a<100:
    a=a+1
    if a %2 != 0:
        print(a)

#4.输出1-100所有偶数
count = 1
while count < 100:
	count = count + 1
	if count %2 == 0:
		print(count)

#Q5.求1-2+3-4+5...99所有数的和
first = 0
sum = 0
while first < 99:
    first = first + 1
    if first %2 == 0:
        sum = sum - first
    else:
        sum = sum + first
print(sum)

 

#Q6.用户登陆三次机会重试
count = 0
while count < 3:
    username = input('enter your name')
    password = input('enter your password')
    if username == ('nero') and password == ('kate'):
        print('success')
        break
    else:
        print('error')
        count = count + 1