#!/usr/bin/env
__author__ = "Powen Ko, www.powenko.com"
a=5
b=2.2
c="3.3"
print(a+b)
print(a-b)
print(a*2)
print(a/2)
#2近位在移1bit
print(a<<1)
print(a>>1)
print(a%3)

d=4.3
print(d/3)
#除法求整數
print(d//3)







