#!/usr/bin/python
# -*- coding: UTF-8 -*-
# coding=utf8
# 例1：if 基本用法
# flag = False
# name = 'python'
# if name == 'python': # 判断变量否为'python'
# flag = True # 条件成立时设置标志为真
# print 'welcome boss' # 并输出欢迎信息
# else:
# print name # 条件不成立时输出变量名称
# 例2：elif用法
# num = 5
# if num == 3: # 判断num的值
# print 'boss'
# elif num == 2:
# print 'user'
# elif num == 1:
# print 'worker'
# elif num < 0: # 值小于零时输出
# print 'error'
# else:
# print 'roadman' # 条件均不成立时输出
# 例3：if语句多个条件
# num = 9
# if num >= 0 and num <= 10: # 判断值是否在0~10之间
# print 'hello'
#
# num = 10
# if num < 0 or num > 10: # 判断值是否在小于0或大于10
# print 'hello'
# else:
# print 'undefine'
#
# num = 8
# # 判断值是否在0~5或者10~15之间
# if (num >= 0 and num <= 5) or (num >= 10 and num <= 15):
# print 'hello'
# else:
# print 'undefine'
# 例四：简单的语句组
# var = 100
#
# if (var == 100):
# print "变量 var 的值为100"
# print "Good bye!"
