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+{
+ "metadata": {
+  "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 5: Pointers"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.1, Page number: 135"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "a = int(raw_input('Enter first number: '))\n",
+      "b = int(raw_input('Enter second number: '))\n",
+      "\n",
+      "# Calculation and result\n",
+      "print ('The original values are a = %d b = %d' % (a, b))\n",
+      "temp = a\n",
+      "a = b\n",
+      "b = temp\n",
+      "\n",
+      "print ('The values after swapping are a = %d b = %d' % (a, b))"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter first number: 15\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter second number: 27\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The original values are a = 15 b = 27\n",
+        "The values after swapping are a = 27 b = 15\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.2, Page number: 136"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "a = int(raw_input('Enter first number: '))\n",
+      "b = int(raw_input('Enter second number: '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "print ('The original values are a = %d b = %d' % (a, b))\n",
+      "\n",
+      "def swap (a, b) :\n",
+      "   temp = a\n",
+      "   a = b\n",
+      "   b = temp\n",
+      "   print ('The values after swapping are a = %d b = %d' % (a, b))\n",
+      "\n",
+      "swap (a, b)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter first number: 15\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter second number: 27\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The original values are a = 15 b = 27\n",
+        "The values after swapping are a = 27 b = 15\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.3, Page number: 141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "a = int(raw_input('Enter first number: '))\n",
+      "b = int(raw_input('Enter second number: '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "print ('The original values are a = %d b = %d' % (a, b))\n",
+      "\n",
+      "def swap (a, b) :\n",
+      "   temp = a\n",
+      "   a = b\n",
+      "   b = temp\n",
+      "   print ('The values after swapping are a = %d b = %d' % (a, b))\n",
+      "\n",
+      "swap (a, b)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter first number: 15\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter second number: 27\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The original values are a = 15 b = 27\n",
+        "The values after swapping are a = 27 b = 15\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.4, Page number: 145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "a = int(raw_input('Enter first number: '))\n",
+      "b = int(raw_input('Enter second number: '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "print ('In main the original values are a = %d b = %d' % (a, b))\n",
+      "print ('In main the address of a is %x and address of b is %x' % (a, b))\n",
+      "\n",
+      "def swap (a, b) :\n",
+      "   print ('In swap the address in a is %x and b is %x' % (a, b))\n",
+      "   temp = a\n",
+      "   a = b\n",
+      "   b = temp\n",
+      "   print ('The values after swapping are a = %d b = %d' % (a, b))\n",
+      "\n",
+      "swap (a, b)\n",
+      "\n",
+      "print ('In main the values after swapping are a = %d b = %d' % (a, b))"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter first number: 15\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter second number: 27\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "In main the original values are a = 15 b = 27\n",
+        "In main the address of a is f and address of b is 1b\n",
+        "In swap the address in a is f and b is 1b\n",
+        "The values after swapping are a = 27 b = 15\n",
+        "In main the values after swapping are a = 15 b = 27\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.5, Page number: 148"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "a = int(raw_input('Enter first number: '))\n",
+      "b = int(raw_input('Enter second number: '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "print ('In main the value of a = %d b = %d' % (a, b))\n",
+      "\n",
+      "def doooo (a, b) :\n",
+      "   a = a+10\n",
+      "   b = b+10\n",
+      "\n",
+      "doooo (a, b)\n",
+      "\n",
+      "print ('In main the value of a = %d b = %d' % (a, b))"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter first number: 5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter second number: 7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "In main the value of a = 5 b = 7\n",
+        "In main the value of a = 5 b = 7\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.6, Page number: 150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "a = int(raw_input('Enter first number: '))\n",
+      "b = int(raw_input('Enter second number: '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "print ('In main the value of a = %d b = %d' % (a, b))\n",
+      "print ('In main the addresses are a = %s b = %s' % (hex(id(a)), hex(id(b))))\n",
+      "\n",
+      "def doooo (a, b) :\n",
+      "   print ('In doooo the addresses are a = %s b = %s' % (hex(id(a)), hex(id(b))))\n",
+      "   a = a+10\n",
+      "   b = b+10\n",
+      "\n",
+      "doooo (a, b)\n",
+      "\n",
+      "print ('In main the value of a = %d b = %d' % (a, b))"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter first number: 5\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter second number: 7\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "In main the value of a = 5 b = 7\n",
+        "In main the addresses are a = 0x1b49138 b = 0x1b49108\n",
+        "In doooo the addresses are a = 0x1b49138 b = 0x1b49108\n",
+        "In main the value of a = 5 b = 7\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.7, Page number: 152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "a = int(raw_input('Enter first number '))\n",
+      "b = int(raw_input('Enter second number '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "def add (a, b) :\n",
+      "   x = a+b\n",
+      "   return x\n",
+      "\n",
+      "som = add (a, b)\n",
+      "\n",
+      "print ('The sum of %d + %d = %d' % (a, b, som))"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter first number 2\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter second number 3\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sum of 2 + 3 = 5\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.8, Page number: 154"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "a = int(raw_input('Enter first number '))\n",
+      "b = int(raw_input('Enter second number '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "def greater (a, b) :\n",
+      "   if a>b :\n",
+      "      big = a\n",
+      "   else :\n",
+      "      big = b\n",
+      "   return big\n",
+      "\n",
+      "great = greater (a, b)\n",
+      "\n",
+      "print ('The greater number is %d' % great)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter first number 45\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter second number 23\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The greater number is 45\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.9, Page number: 156"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "a = int(raw_input('Enter first number '))\n",
+      "b = int(raw_input('Enter second number '))\n",
+      "c = int(raw_input('Enter third number '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "def greater (a, b, c) :\n",
+      "   if a>b :\n",
+      "      if a>c :\n",
+      "         big = a\n",
+      "      else :\n",
+      "         big = c\n",
+      "   else :\n",
+      "      if b>c :\n",
+      "         big = b\n",
+      "      else :\n",
+      "         big = c\n",
+      "   return big\n",
+      "\n",
+      "great = greater (a, b, c)\n",
+      "\n",
+      "print ('The greatest number is %d' % great)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter first number 45\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter second number 190\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter third number 128\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The greatest number is 190\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.10, Page number: 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "n = int(raw_input('Enter any number '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "def summate (n) :\n",
+      "   i = 1\n",
+      "   total = 0\n",
+      "   while i <= n :\n",
+      "      total = total + i\n",
+      "      i = i+1\n",
+      "   return total\n",
+      "\n",
+      "sumn = summate (n)\n",
+      "\n",
+      "print ('Sum of first %d natural numbers is %d' % (n, sumn))"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter any number 5\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of first 5 natural numbers is 15\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.11, Page number: 160"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "n = int(raw_input('Enter any number '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "def sumofdigit (n) :\n",
+      "   sum = 0\n",
+      "   while n > 0 :\n",
+      "      sum = sum + n%10\n",
+      "      n = n/10\n",
+      "   return sum\n",
+      "\n",
+      "result = sumofdigit (n)\n",
+      "\n",
+      "print ('Sum of digits of %d is %d' % (n, result))"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter any number 7162\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of digits of 7162 is 16\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.12, Page number: 161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "n = int(raw_input('Enter any number '))\n",
+      "sum = n\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "def sumofdigit (n, sum) :\n",
+      "   while sum>=10 :\n",
+      "      sum = 0\n",
+      "      while n>0 :\n",
+      "         sum = sum + n%10\n",
+      "         n = n/10\n",
+      "      n = sum\n",
+      "   return sum\n",
+      "\n",
+      "result = sumofdigit (n, sum)\n",
+      "\n",
+      "print ('Sum of digits of %d is %d' % (n, result))"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter any number 7162\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Sum of digits of 7162 is 7\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.13, Page number: 163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "n = int(raw_input('Enter any number '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "def checkprime (n) :\n",
+      "   flag = 1\n",
+      "   i = 2\n",
+      "   while i<n and flag :\n",
+      "      if n%i == 0 :\n",
+      "         flag = 0\n",
+      "      i = i+1\n",
+      "   return flag\n",
+      "\n",
+      "result = checkprime (n)\n",
+      "\n",
+      "if result :\n",
+      "   print ('%d is Prime ' % n)\n",
+      "else :\n",
+      "   print ('%d is Composite ' % n)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter any number 41\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "41 is Prime \n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.14, Page number: 165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "n = int(raw_input('Enter any number '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "def checkprime (n) :\n",
+      "   for num in range (2, n+1) :\n",
+      "      flag = 1\n",
+      "      for i in range (2, num) :\n",
+      "         if num % i == 0 : \n",
+      "            flag = 0\n",
+      "      if flag :\n",
+      "         print ('%d ' % num),\n",
+      "\n",
+      "checkprime (n)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter any number 11\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "2  3  5  7  11 \n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.15, Page number: 167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "n = int(raw_input('Enter any number '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "def makethird (n) :\n",
+      "   first = 0\n",
+      "   second = 1\n",
+      "   count = 3\n",
+      "   print ('%d terms of Fibonacci series are ' % n)\n",
+      "   print ('%d  %d ' % (first, second)),\n",
+      "   while count<=n :\n",
+      "      third = first + second\n",
+      "      first = second\n",
+      "      second = third\n",
+      "      print (' %d ' % third),\n",
+      "      count = count + 1\n",
+      "\n",
+      "makethird (n)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter any number 10\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10 terms of Fibonacci series are \n",
+        "0  1   1   2   3   5   8   13   21   34 \n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.16, Page number: 169"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Variable declaration\n",
+      "n = int(raw_input('Enter any number '))\n",
+      "\n",
+      "# Function declaration, calculation and result\n",
+      "def makethird (n) :\n",
+      "   first = 0\n",
+      "   second = 1\n",
+      "   third = 0\n",
+      "   print ('Fibonacci series up to %d is ' % n)\n",
+      "   print first,\n",
+      "   while third<=n :\n",
+      "      print (' %d ' % second),\n",
+      "      third = first + second\n",
+      "      first = second\n",
+      "      second = third\n",
+      "\n",
+      "makethird (n)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter any number 100\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Fibonacci series up to 100 is \n",
+        "0  1   1   2   3   5   8   13   21   34   55   89 \n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file