{
 "metadata": {
  "name": "",
  "signature": "sha256:c466b513c45bfe09da1b0507614f538770318fb66aadf4da4e1995363df32911"
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "heading",
     "level": 1,
     "metadata": {},
     "source": [
      "Chapter 3 , Integer Arithmetic Expressions"
     ]
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Program 3-1 , Page number: 33"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# An introduction to arithmetic \n",
      "\n",
      "a = 2\n",
      "b = 3\n",
      "c = 4\n",
      "\n",
      "answer = a + b\n",
      "print \"a + b = %d\"%answer\n",
      "\n",
      "answer = a - b\n",
      "print \"a - b = %d\"%answer\n",
      "\n",
      "answer = a * b\n",
      "print \"a * b = %d\"%answer\n",
      "\n",
      "answer = a / b\n",
      "print \"a / b = %d\"%answer\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "a + b = 5\n",
        "a - b = -1\n",
        "a * b = 6\n",
        "a / b = 0\n"
       ]
      }
     ],
     "prompt_number": 1
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Program 3-2 , Page number: 34"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Illustration of mathematical hierarchy\n",
      "\n",
      "a = 2\n",
      "b = 3\n",
      "c = 4\n",
      "\n",
      "answer = a + b * c\n",
      "\n",
      "print \"a = %d, b = %d, c= %d\"%(a,b,c)\n",
      "print \"a + b * c = %d\\n\"%answer"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "a = 2, b = 3, c= 4\n",
        "a + b * c = 14\n",
        "\n"
       ]
      }
     ],
     "prompt_number": 2
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Program 3-3 , Page number: 35"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# A more advanced illustration of mathematical hierarchy\n",
      "\n",
      "a = 5\n",
      "b = 10\n",
      "c = 15\n",
      "\n",
      "answer = a + b / c\n",
      "print \"%d + %d / %d = %d\"%(a,b,c,answer)\n",
      "\n",
      "answer = b * c - a\n",
      "print \"%d * %d - %d = %d\"%(a,b,c,answer)\n",
      "\n",
      "answer = a * b / c\n",
      "print \"%d * %d / %d = %d\"%(a,b,c,answer)\n",
      "\n",
      "answer = (a + c) * b / a\n",
      "print \"(%d + %d) * %d / %d = %d\"%(a,c,b,a,answer)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "5 + 10 / 15 = 5\n",
        "5 * 10 - 15 = 145\n",
        "5 * 10 / 15 = 3\n",
        "(5 + 15) * 10 / 5 = 40\n"
       ]
      }
     ],
     "prompt_number": 3
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Program 3-4 , Page number: 37"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Illustration of modulus operator\n",
      "\n",
      "a = 4\n",
      "b = 8\n",
      "c = 13\n",
      "\n",
      "print \"%d mod %d = %d\"%(b,a,b%a)\n",
      "print \"%d mod %d = %d\"%(c,a,c%a)\n",
      "print \"%d mod %d = %d\"%(c,b,c%b)\n",
      "\n",
      "print \"The modulus operator is: %\"\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "8 mod 4 = 0\n",
        "13 mod 4 = 1\n",
        "13 mod 8 = 5\n",
        "The modulus operator is: %\n"
       ]
      }
     ],
     "prompt_number": 4
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Program 3-5 , Page number: 38"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Illustration of the unary minus\n",
      "\n",
      "a = -4\n",
      "b = 5\n",
      "c = -6\n",
      "\n",
      "print \"a = %d, b = %d, c = %d\\n\\n\"%(a,b,c)\n",
      "print \"      and now\\n\\n\"\n",
      "\n",
      "a = -a\n",
      "b = -b\n",
      "c = -c\n",
      "\n",
      "print \"a = %d, b = %d, c = %d\\n\\n\"%(a,b,c)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "a = -4, b = 5, c = -6\n",
        "\n",
        "\n",
        "      and now\n",
        "\n",
        "\n",
        "a = 4, b = -5, c = 6\n",
        "\n",
        "\n"
       ]
      }
     ],
     "prompt_number": 5
    }
   ],
   "metadata": {}
  }
 ]
}