while循环

While循环    最简单的例子

Count = 0

While true:

       Print(“count:”,count)

       Count = count + 1  #count  +=1

 

列子1

Age_of_oldboy =56

Count = 0   计数

While true：

       If count ==3    执行3次退出

              Break

       Guess_age = int(input(“guess_age:”))

       If guess_age ==age_of_oldboy :

              Print(“yes you got it”)

              Break       输入为真退出

       Elif guess_age >age_of_oldboy:

              Print(“think smaller”)

       Else:

              Print(“think bigger”)

       Count +=1      计数

 

while列子2  优化版本

Age_of_oldboy =56

Count = 0   计数

While count < 3:

       Guess_age = int(input(“guess_age:”))

       If guess_age ==age_of_oldboy :

              Print(“yes you got it”)

              Break       输入为真退出

       Elif guess_age >age_of_oldboy:

              Print(“think smaller”)

       Else:

              Print(“think bigger”)

       Count +=1      计数

Else:

       Print(“you have tried too many times..fuck off”)