【Python 第10课】 变量2

fix

a = 0
b =0

while a <99:
    b = b+a
    a = a+1
   
while a<100:
    b = b+a
    a = a+1

    print a
    print b
输出最终结果

fix

#learning in crossin
#while To circulate everything,under while  
a = 0
b =0  #the prerequisite to determine the sentence below

while a <99:
    a = a+1
    b = b+a
while a<100:
    a = a+1
    b = b+a
    print a
    print b
12课发现上面做错 while 下b结果放到a结果后面才能用a新赋值