adding book

1 files changed, 610 insertions, 0 deletions

diff --git a/The_C_Book/Chapter5.ipynb b/The_C_Book/Chapter5.ipynb
new file mode 100755
index 00000000..e9821e3f
--- /dev/null
+++ b/The_C_Book/Chapter5.ipynb
@@ -0,0 +1,610 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:9c17589f9344a35ddc3dd493523efe0d9a1cf9ad387dc72f15338d1f77f12b62"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 5: Arrays and Pointers"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.1, page no. 137"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "'''\n",
+      "python does not have pointer functionality.We can get it explicitly.\n",
+      "'''\n",
+      "\n",
+      "class ref:\n",
+      "    def __init__(self, obj): self.obj = obj\n",
+      "    def get(self):    return str(self.obj)\n",
+      "    def set(self, obj):      self.obj = obj\n",
+      "\n",
+      "\n",
+      "x=ref([0])\n",
+      "p=x # assigning variable value to p\n",
+      "\n",
+      "p.set(0) # set x to zero */\n",
+      "print \"\\nx is \" + x.get()\n",
+      "print \"\\np is \" + p.get()\n",
+      "a = p.get()\n",
+      "p.set(int(a)+1) # increment what p points to */\n",
+      "print \"\\nx is \" +x.get()\n",
+      "a = p.get()\n",
+      "p.set(int(a)+1) # increment what p points to */\n",
+      "print \"\\nx is \" + x.get()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "\n",
+        "x is 0\n",
+        "\n",
+        "p is 0\n",
+        "\n",
+        "x is 1\n",
+        "\n",
+        "x is 2\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.2, page no. 139"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "def date(a,b): # /* declare the function */\n",
+      "    day_ret =0\n",
+      "    month_ret = 0\n",
+      "    ''' At this point, calculate the day and month\n",
+      "    * values in day_ret and month_ret respectively.\n",
+      "    '''\n",
+      "    a = day_ret;\n",
+      "    b = month_ret;\n",
+      "    return a,b\n",
+      "\n",
+      "\n",
+      "\n",
+      "\n",
+      "month = 5\n",
+      "day = 1\n",
+      "d,m = date(day,month);\n",
+      "print \"day is %d, month is %d\\n\" %(d, m)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "day is 0, month is 0\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.3, page no. 142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "from array import array\n",
+      "\n",
+      "ARSZ=20\n",
+      "ar=[]\n",
+      "\n",
+      "for i in range(ARSZ + 1):\n",
+      "    ar.append( i)\n",
+      "    print \"ar[%d] now = %d\\n\" %( i, ar[i])"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "ar[0] now = 0\n",
+        "\n",
+        "ar[1] now = 1\n",
+        "\n",
+        "ar[2] now = 2\n",
+        "\n",
+        "ar[3] now = 3\n",
+        "\n",
+        "ar[4] now = 4\n",
+        "\n",
+        "ar[5] now = 5\n",
+        "\n",
+        "ar[6] now = 6\n",
+        "\n",
+        "ar[7] now = 7\n",
+        "\n",
+        "ar[8] now = 8\n",
+        "\n",
+        "ar[9] now = 9\n",
+        "\n",
+        "ar[10] now = 10\n",
+        "\n",
+        "ar[11] now = 11\n",
+        "\n",
+        "ar[12] now = 12\n",
+        "\n",
+        "ar[13] now = 13\n",
+        "\n",
+        "ar[14] now = 14\n",
+        "\n",
+        "ar[15] now = 15\n",
+        "\n",
+        "ar[16] now = 16\n",
+        "\n",
+        "ar[17] now = 17\n",
+        "\n",
+        "ar[18] now = 18\n",
+        "\n",
+        "ar[19] now = 19\n",
+        "\n",
+        "ar[20] now = 20\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.4 & 5.5, page no. 146"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "ARSZ = 10\n",
+      "\n",
+      "fp1= ARSZ\n",
+      "fp2=0\n",
+      "\n",
+      "\n",
+      "while(fp2 != fp1):\n",
+      "    print \"Difference: %d\\n\" %((ARSZ-fp1))\n",
+      "    fp1 -= 1"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Difference: 0\n",
+        "\n",
+        "Difference: 1\n",
+        "\n",
+        "Difference: 2\n",
+        "\n",
+        "Difference: 3\n",
+        "\n",
+        "Difference: 4\n",
+        "\n",
+        "Difference: 5\n",
+        "\n",
+        "Difference: 6\n",
+        "\n",
+        "Difference: 7\n",
+        "\n",
+        "Difference: 8\n",
+        "\n",
+        "Difference: 9\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.6, page no. 149"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "s = raw_input(\"Enter String:\")\n",
+      "print len(s)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter String:python \n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "7\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.7, page no. 150"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "def str_eq(s1,s2):\n",
+      "    if s1==s2:\n",
+      "        return True\n",
+      "    return False\n",
+      "\n",
+      "print str_eq(\"this\",\"hello\")\n",
+      "print str_eq(\"this\",\"this\")"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "False\n",
+        "True\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.8, page no. 151"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "cp = \"a string\";\n",
+      "for i in cp:\n",
+      " print i,\n",
+      "\n",
+      "print \"\\n\"\n",
+      "for i in range(len(cp)):\n",
+      " print cp[i],"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "a   s t r i n g \n",
+        "\n",
+        "a   s t r i n g\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.9, page no. 152"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "import numpy\n",
+      "\n",
+      "ARLEN=10\n",
+      "ar  =  numpy.zeros(ARLEN)\n",
+      "\n",
+      "print ar"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "[ 0.  0.  0.  0.  0.  0.  0.  0.  0.  0.]\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.10, page no. 158"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "'''\n",
+      "Python does not have any concept of pointer.\n",
+      "Python will go same for all mentioned.\n",
+      "'''\n",
+      "\n",
+      "\n",
+      "MAXSTRING=50 # /* max no. of strings */\n",
+      "MAXLEN = 80 #/* max length. of strings */\n",
+      "\n",
+      "strings = [] # list of strings\n",
+      "\n",
+      "def print_arr(a):\n",
+      "    print a\n",
+      "\n",
+      "\n",
+      "def sort_arr(a):\n",
+      "      a.sort()\n",
+      "      return a\n",
+      "\n",
+      "\n",
+      "def next_string():\n",
+      "    s = raw_input(\"Enter Next String : \")\n",
+      "    strings.append(s)\n",
+      "    return s\n",
+      "\n",
+      "nstrings = 0\n",
+      "\n",
+      "while(nstrings < MAXSTRING and next_string() != '0'):\n",
+      "    nstrings += 1\n",
+      "\n",
+      "print_arr(strings)\n",
+      "print sort_arr(strings)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Next String : abc\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Next String : def\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Next String : fed\n"
+       ]
+      },
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter Next String : 0\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "['abc', 'def', 'fed', '0']\n",
+        "['0', 'abc', 'def', 'fed']\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.13, page no. 165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "'''\n",
+      "We need not to worry about memory allocation and deallocation in python.\n",
+      "It is simple to get a string, print and copy it.\n",
+      "'''\n",
+      "\n",
+      "\n",
+      "str_p = \"\"\n",
+      "tmp_p = \"\"\n",
+      "\n",
+      "str_p = raw_input(\"Enter String.. : \")\n",
+      "next_p = str_p\n",
+      "chars_read = len(str_p)\n",
+      "\n",
+      "\n",
+      "tmp_p = str_p\n",
+      "\n",
+      "print tmp_p\n",
+      "\n",
+      "\n",
+      "print str_p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "name": "stdout",
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Enter String.. : hello\n"
+       ]
+      },
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "hello\n",
+        "hello\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.14, page no. 165"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "arr = \"hello\"\n",
+      "a = arr\n",
+      "print \"Size of arr %d\\n\" % len(arr)\n",
+      "print \"Size of a %d\\n\" % len(a)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Size of arr 5\n",
+        "\n",
+        "Size of a 5\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5.16, page no. 167"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "def func(arg):\n",
+      "\tprint \"%d\\n\" %(arg)\n",
+      "\n",
+      "func(5)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "5\n",
+        "\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file