1 #!/usr/bin/env python
2 # coding:utf-8
3 # name: eddy
4
5 def calc(a,b,c):
6 if c == '+':
7 return add(a,b)
8 elif c == '-':
9 return sub(a,b)
10 elif c == '*':
11 return mul(a,b)
12 elif c == '/':
13 if b != 0:
14 return div(a,b)
15 else:
16 print('输入错误不能为0')
17 def add(a,b):
18 return a+b
19 def sub(a,b):
20 return a-b
21 def mul(a,b):
22 return a*b
23 def div(a,b):
24 return a/b
25
26 if __name__ =='__main__':
27 a = int(input('请输入你第一个数字'))
28 b = int(input('请输入你第二个数字'))
29 c = input('请输入你第三个数字')
30 print(calc(a,b,c))
