codewar刷题--8kyu--Grasshopper - Debug

Posted 2020-12-17 zivaro

原题目：

Debug celsius converter

Your friend is traveling abroad to the United States so he wrote a program to convert fahrenheit to celsius. Unfortunately his code has some bugs.

Find the errors in the code to get the celsius converter working properly.

To convert fahrenheit to celsius:

celsius = (fahrenheit - 32) * (5/9)

Remember that typically temperatures in the current weather conditions are given in whole numbers. It is possible for temperature sensors to report temperatures with a higher accuracy such as to the nearest tenth. Instrument error though makes this sort of accuracy unreliable for many types of temperature measuring sensors.

大致意思是，需要将温度做个转换，把华氏的温度转成摄氏的温度，题目给出了一个公式

celsius = (fahrenheit - 32) * (5/9)

输入一个华氏温度，通过函数计算判断是否高于冰点（0℃）,题目给出一个写好的代码，需要将代码优化后才能提交。

给的代码的bug有很多，运行的时候各种坑，感觉是一个新手菜鸟会犯的很多错。（提交了答案后找不回来了，不列举）

按照题目意图写了如下代码，但是在提交的是，有部分被否定了。

被否代码：

1 def weather_info (temp):
2     c =(temp-32)*5/9
3     if (c > 0):
4         return (str(c) + " is above freezing temperature")
5     else:
6         return (str(c) + " is freezing temperature")
#‘252.77777777777777 is above freezing temperature‘ should equal ‘252.7777777777778 is above freezing temperature‘

查看了其他的解决方法后，发现自己在做计算的时候没有将c =(temp-32)*5/9  的数字类型转换程float ,导致精度损失，被否。

修改了代码后提交成功了。

成功提交代码

1 def weather_info (temp):
2     c =(temp-32.0)*(5.0/9.0)
3     if (c > 0):
4         return (str(c) + " is above freezing temperature")
5     else:
6         return (str(c) + " is freezing temperature")

 -------我是分割线

题目给的代码找回来了，标红的都是有问题的代码。

1 def weather_info (temp):
2     c : convert(temp) 
3     if (c > 0): 
4         return (c + " is freezing temperature")
5     else:
6         return (c + " is above freezing temperature")
7     
8 def convertToCelsius (temperature):
9   var celsius = (tempertur) - 32 + (5/9)