while循环语句及练习题

while a>b :
    xxxx

 

 

 练习题：

1、使用while输出1-10

n = 1
while n <= 10:
    print(n, end=" ")
    n = n + 1

 

2、求1-100所有数的和

sum1 = 0
i = 1
while i <= 100:
    sum1 = sum1 + i
    i = i + 1
print(sum1)

 

 

3、输出1-100内所有的奇数

i = 1
while i <= 100:
    if i % 2 == 1:
        print(i, end=" ")
    i = i + 1

 

4、输出1-100内所有的偶数

i = 1
while i <= 100:
    if i % 2 == 0:
        print(i, end=" ")
    i = i + 1

 

5、求1-2+3-4...99的和

i = 1
fl = -1
s = 0
while i <= 99:
    s = s + i * fl
    fl = fl * (-1)
    i = i + 1
print(s)