#while循环基础语句
while 1==1:
print('OK') #死循环 #如何阻止死循环 count=0
while count<10:
print('第'+(str)(count)+'次循环') #定义的为int 所以必须用str将其转化为字符串
count=count+1
print('循环结束')
#continue
continue用于退出当前循环，直接进去下一次循环
while True:
print("")
continue
print("")
#break
break用于中断所有循环
while True:
print("")
break
print("")
#while循环练习题
1、使用while循环输入1 2 3 4 5 6 8 9 10
count = 1
while count<=10 :
if count == 7:
pass
else:
print(count)
count=count+1
print("循环结束")
2、求1-100的所有数的和
count = 1
su=0
while count<=100:
su+=count
count=count+1
print(su)
3、输出1-100的所有奇数
count = 1
while count <= 100:
if count % 2!=0:
print(count)
count=count+1
4、输出1-100的所有偶数
count = 1
while count <= 100:
if count % 2==0:
print(count)
count=count+1
5、求1-2+3-4+5+...+99的所有数的和（方法1）
#可以将其分解为(1+3+5+...+99)-(2+4+6+...+98) count = 1
su=0
while count < 100:
if count % 2!=0:
su+=count
count=count+1
print('奇数之和为'+(str)(su))
count1 = 1
su1=0
while count1 < 100:
if count1 % 2==0:
su1+=count1
count1=count1+1
print('偶数之和为'+(str)(su1))
print('(1+3+5+...+99)-(2+4+6+...+98)'+'='+(str)(su-su1))
方法2：
count = 1
su=0
while count<100:
temp=count%2
if temp ==0:
su=su-count
else:
su=su+count
count=count+1
print(su)