有个Q友问怎么写个程序能按照要求输入，再输出对应形状的面积？

我大概写了几行，没有考虑输出异常，重点想记录下 int 的接收，如下图

知识点就两个

1， 长方形面积 & 三角形面积，因为要从终端接收用户的多个参数输入，所以用了map(int,raw_input().split()) 这种方式

2. 圆面积只想保留小数点后两位，就用到了 %.2f 来接收

#!/usr/bin/python
#-*-coding:utf-8 -*-
 
name = raw_input("Please input your name here : ")
if name == '':
 print "we don't like anonymous"
else:
 choose = input("Which shape would you like to choose 1:Rectangle,2:Square,3:Triangle or 4 Round? :")
 if choose == 1:
 width,height = map(int,raw_input("Input width and height here,like 5 8 :").split())
 print "Area = %d" % (width * height)
 elif choose == 2:
 length = input("Input width and height here,like 4:")
 print "Area = %d" % length ** 2
 elif choose == 3:
 width,like 5 8 :").split())
 print "Area = %d" % (width * height / 2)
 elif choose == 4:
 diameter = input("Input diameter here like 3 :")
 print "Area = %.2f" % (3.14 * (diameter / 2) ** 2)
 else:
 print "Invalid choose"

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