{
 "metadata": {
  "name": "ex.3"
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "# \u4e60\u98983: \u6570\u5b57\u548c\u6570\u5b66\u8ba1\u7b97"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<table>\n",
      "    <tbody>\n",
      "        <tr><td><code>+</code></td><td>\u52a0\u53f7</td><td>plus</td></tr>\n",
      "        <tr><td><code>-</code></td><td>\u51cf\u53f7</td><td>minus</td></tr>\n",
      "        <tr><td><code>/</code></td><td>\u659c\u6760</td><td>slash</td></tr>\n",
      "        <tr><td><code>*</code></td><td>\u661f\u53f7</td><td>asterisk</td></tr>\n",
      "        <tr><td><code>%</code></td><td>\u767e\u5206\u53f7</td><td>percent</td></tr>\n",
      "        <tr><td><code>&lt;</code></td><td>\u5c0f\u4e8e\u53f7</td><td>less-than</td></tr>\n",
      "        <tr><td><code>&gt;</code></td><td>\u5927\u4e8e\u53f7</td><td>greater-than</td></tr>\n",
      "        <tr><td><code>&lt;=</code></td><td>\u5c0f\u4e8e\u7b49\u4e8e\u53f7</td><td>less-than-equal</td></tr>\n",
      "        <tr><td><code>&gt;=</code></td><td>\u5927\u4e8e\u7b49\u4e8e\u53f7</td><td>greater-than-equal</td></tr>\n",
      "    </tbody>\n",
      "</table>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "print \"I will now count my chickens:\"\n",
      "\n",
      "print \"Hens\", 25 + 30 / 6\n",
      "print \"Roosters\", 100 - 25 * 3 % 4\n",
      "\n",
      "print \"Now I will count the eggs:\"\n",
      "\n",
      "print 3 + 2 + 1 - 5 + 4 % 2 - 1 / 4 + 6\n",
      "\n",
      "print \"Is it true that 3 + 2 < 5 - 7?\"\n",
      "\n",
      "print 3 + 2 < 5 - 7\n",
      "\n",
      "print \"What is 3 + 2?\", 3 + 2\n",
      "print \"What is 5 - 7?\", 5 - 7\n",
      "\n",
      "print \"Oh, that's why it's False.\"\n",
      "\n",
      "print \"How about some more.\"\n",
      "\n",
      "print \"Is it greater?\", 5 > -2\n",
      "print \"Is it greater or equal?\", 5 >= -2\n",
      "print \"Is it less or equal?\", 5 <= -2"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "I will now count my chickens:\n",
        "Hens 30\n",
        "Roosters 97\n",
        "Now I will count the eggs:\n",
        "7\n",
        "Is it true that 3 + 2 < 5 - 7?\n",
        "False\n",
        "What is 3 + 2? 5\n",
        "What is 5 - 7? -2\n",
        "Oh, that's why it's False.\n",
        "How about some more.\n",
        "Is it greater? True\n",
        "Is it greater or equal? True\n",
        "Is it less or equal? False\n"
       ]
      }
     ],
     "prompt_number": 1
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "## \u6d6e\u70b9\u6570"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "print 5 / 2\n",
      "print 5.0 / 2.0\n",
      "print 5 / 2.0\n",
      "print 5 / (2 * 1.)\n",
      "print float(5) / 2\n",
      "print int(5.0) / 2"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "2\n",
        "2.5\n",
        "2.5\n",
        "2.5\n",
        "2.5\n",
        "2\n"
       ]
      }
     ],
     "prompt_number": 2
    }
   ],
   "metadata": {}
  }
 ]
}