path: root/A_First_course_in_Programming_with_C/Chapter8.ipynb

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 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h1>Chapter 8: String Manipulations in C<h1>"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h3>Example 1, Page number: SMC-4<h3>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Count a character in a string\n",
      "\n",
      "import sys\n",
      "\n",
      "#Variable Initialization\n",
      "st = raw_input(\"Enter the string : \")\n",
      "ch = raw_input(\"Which char to be counted ?\")\n",
      "\n",
      "#Checking\n",
      "l = len(st)\n",
      "count = 0\n",
      "for i in st:\n",
      "    if i == ch:\n",
      "        count = count + 1\n",
      "        \n",
      "#Output\n",
      "sys.stdout.write(\"\\nThe character %c occurs %d times\"%(ch,count))"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter the string : MISSISSIPPI\n"
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Which char to be counted ?S\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "The character S occurs 4 times"
       ]
      }
     ],
     "prompt_number": 1
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h3>Example 2, Page number: SMC-5<h3>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Counting vowels\n",
      "\n",
      "import sys\n",
      "\n",
      "#Variable Initialization\n",
      "st = raw_input(\"Enter the sentence :\")\n",
      "count = 0\n",
      "\n",
      "#Processing\n",
      "for i in st:\n",
      "    if i == 'A'or i == 'E' or i == 'I' or i == 'O' or i == 'U' or i == 'a' or i == 'e' or i == 'i' or i == 'o' or i == 'u':\n",
      "        count = count + 1\n",
      "\n",
      "#Result\n",
      "sys.stdout.write(\"%d vowels are present in the sentence\"%(count))\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter the sentence :This is a book\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "5 vowels are present in the sentence"
       ]
      }
     ],
     "prompt_number": 2
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h3>Example 3, Page number: SMC-6<h3>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Palindrome or not \n",
      "\n",
      "import sys\n",
      "\n",
      "#Variable Initialization\n",
      "rst = ['' for i in range(0,20)]\n",
      "st = raw_input(\"Enter the string : \")\n",
      "j = len(st)-1\n",
      "\n",
      "#Processing\n",
      "rst = st[::-1]\n",
      "\n",
      "#Result\n",
      "if st == rst:\n",
      "    sys.stdout.write(\"%s is a palindrome string\"%(st))\n",
      "else:\n",
      "    sys.stdout.write(\"%s is not a palindrome string\"%(st))\n",
      "\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter the string : HYDERABAD\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "HYDERABAD is not a palindrome string"
       ]
      }
     ],
     "prompt_number": 3
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h3>Example 4, Page number: SMC-8<h3>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#String Concatenation\n",
      "\n",
      "import sys\n",
      "\n",
      "#Variable Initialization\n",
      "st1 = raw_input(\"Enter first string : \")\n",
      "st2 = raw_input(\"Enter second string : \")\n",
      "\n",
      "#Processing\n",
      "st = st1 + \" \" + st2\n",
      "\n",
      "#Result\n",
      "sys.stdout.write(\"\\nResultant string is %s\"%(st))"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter first string : NEW\n"
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter second string : DELHI\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "Resultant string is NEW DELHI"
       ]
      }
     ],
     "prompt_number": 5
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h3>Example 5, Page number: SMC-10<h3>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Print greater string\n",
      "\n",
      "import sys\n",
      "\n",
      "#Variable Initialization\n",
      "st1 = raw_input(\"Enter string 1 : \")\n",
      "st2 = raw_input(\"Enter string 2 : \")\n",
      "\n",
      "\n",
      "#Result\n",
      "if st1 > st2:\n",
      "    sys.stdout.write(\"%s is alphabetically greater string\"%(st1))\n",
      "else:\n",
      "    sys.stdout.write(\"%s is alphabetically greater string\"%(st2))"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter string 1 : ALPHA\n"
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter string 2 : BETA\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "BETA is alphabetically greater string"
       ]
      }
     ],
     "prompt_number": 6
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h3>Example 6, Page number: SMC-11<h3>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#String sorting\n",
      "\n",
      "import sys\n",
      "\n",
      "#Variable Initialization\n",
      "names = [\"\" for i in range(0,50)]\n",
      "n = int(raw_input(\"How many names ? \"))\n",
      "sys.stdout.write(\"\\nEnter the %d names one by one\"%(n))\n",
      "\n",
      "for i in range(0,n):\n",
      "    names[i] = raw_input(\"\")\n",
      "    \n",
      "for i in range(0,n):\n",
      "    for j in range(i+1,n):\n",
      "        if names[i] > names[j]:\n",
      "            temp = names[i]\n",
      "            names[i] = names[j]\n",
      "            names[j] = temp\n",
      "            \n",
      "#Result\n",
      "sys.stdout.write(\"\\nNames in alphabetical order\")\n",
      "for i in range(0,n):\n",
      "    sys.stdout.write(\"\\n%s\"%(names[i]))"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "How many names ? 4\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "Enter the 4 names one by one"
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "DEEPAK\n"
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "SHERIN\n"
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "SONIKA\n"
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "ARUN\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "Names in alphabetical order\n",
        "ARUN\n",
        "DEEPAK\n",
        "SHERIN\n",
        "SONIKA"
       ]
      }
     ],
     "prompt_number": 9
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h3>Example 7, Page number: SMC-13<h3>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Lower case text to upper case\n",
      "\n",
      "import sys\n",
      "\n",
      "#Variable Initialization\n",
      "st = raw_input(\"Enter a sentence : \")\n",
      "\n",
      "#Result\n",
      "st = st.upper()\n",
      "\n",
      "sys.stdout.write(\"\\nThe converted upper case string is \\n%s\"%(st))"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter a sentence : logical thinking is a must to learn programming\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "The converted upper case string is \n",
        "LOGICAL THINKING IS A MUST TO LEARN PROGRAMMING"
       ]
      }
     ],
     "prompt_number": 3
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h3>Example 8, Page number: SMC-14<h3>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Determine the longest word\n",
      "\n",
      "import sys\n",
      "\n",
      "\n",
      "#Variable Initialization\n",
      "st = raw_input(\"Enter a sentence  \")\n",
      "\n",
      "#Processing\n",
      "lngst = max(st.split(), key=len)\n",
      "\n",
      "#Result\n",
      "sys.stdout.write(\"\\nLongest word is %s\"%(lngst))\n",
      "sys.stdout.write(\"\\nPress any key to continue...\")"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter a sentence  SMALL THINGS MAKE PERFECTION BUT PERFECTION IS NO SMALL THING\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "Longest word is PERFECTION\n",
        "Press any key to continue..."
       ]
      }
     ],
     "prompt_number": 6
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h3>Example 9, Page number: SMC-16<h3>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Remove particular word in a text\n",
      "\n",
      "import sys\n",
      "\n",
      "#Variable Initialization\n",
      "st = raw_input(\"Enter a sentence : \")\n",
      "\n",
      "omit = raw_input(\"\\nEnter word to omit : \")\n",
      "word = st.split()\n",
      "newst = ' '.join([i for i in word if i not in omit])\n",
      "\n",
      "#Result\n",
      "sys.stdout.write(\"\\nAfter omitting the word %s\\n%s\"%(omit,newst))\n",
      "sys.stdout.write(\"\\nPress any key to continue...\")"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter a sentence : TO ACCESS THE NAME OF THE CITY IN THE LIST\n"
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "Enter word to omit : THE\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "After omitting the word THE\n",
        "TO ACCESS NAME OF CITY IN LIST\n",
        "Press any key to continue..."
       ]
      }
     ],
     "prompt_number": 9
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h3>Example 10, Page number: SMC-17<h3>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Telegram expense calculation\n",
      "\n",
      "import sys\n",
      "\n",
      "#Variable Initialization\n",
      "st = raw_input(\"Type the sentence for Telegram : \")\n",
      "\n",
      "count = len(st.split())\n",
      "\n",
      "if count <= 10:\n",
      "    amt = 5\n",
      "else:\n",
      "    amt = 5 + (count - 10) * 1.25\n",
      "    \n",
      "#Result\n",
      "sys.stdout.write(\"\\nAmount to be paid for telegram = Rs. %6.2f\"%(amt))"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Type the sentence for Telegram : Congratulations on your success in Examinations.\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "Amount to be paid for telegram = Rs.   5.00"
       ]
      }
     ],
     "prompt_number": 10
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "<h3>Example 11, Page number: SMC-19<h3>"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Count lines, words and characters\n",
      "\n",
      "import sys\n",
      "\n",
      "#Variable Initialization\n",
      "txt = raw_input(\"Enter the text, type $st end\\n\\n\")\n",
      "\n",
      "wds = 0\n",
      "lns = 0\n",
      "chs = 0\n",
      "\n",
      "#Processing\n",
      "for i in txt:\n",
      "    if i == ',' or i == '!' or i == '\\t' or i == ' ':\n",
      "        wds += 1\n",
      "        chs += 1\n",
      "    else:\n",
      "        if i == '?' :\n",
      "            \n",
      "            lns += 1\n",
      "        else:\n",
      "            if i == '.':\n",
      "                wds += 1\n",
      "                lns += 1\n",
      "            else:\n",
      "                chs += 1\n",
      "    \n",
      "#Result\n",
      "sys.stdout.write(\"\\n\\nNumber of char(incl.blanks) = %d\"%(chs))\n",
      "sys.stdout.write(\"\\nNumber of words = %d\"%(wds))\n",
      "sys.stdout.write(\"\\nNumber of lines = %d\"%(lns))\n",
      "            "
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter the text, type $st end\n",
        "\n",
        "What is a string? How do you initialize it? Explain with example.$\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "\n",
        "Number of char(incl.blanks) = 63\n",
        "Number of words = 12\n",
        "Number of lines = 3"
       ]
      }
     ],
     "prompt_number": 5
    }
   ],
   "metadata": {}
  }
 ]
}