{
 "metadata": {
  "name": "",
  "signature": "sha256:985e0e6b7e8ae27035cca1419b7775a3f9a570b5ac018168350c0febbe31d7b4"
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "heading",
     "level": 1,
     "metadata": {},
     "source": [
      "Chapter 4 - Arithmetic Operators"
     ]
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 4.1, page no. 82"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "\n",
      "print \"Enter number of preregistered students: \",\n",
      "total = int(raw_input())\n",
      "print \"Enter number of students adding the course: \",\n",
      "added = int(raw_input())\n",
      "total = total + added\n",
      "print \"Total number of students: \", total"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter number of preregistered students: "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "35\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " Enter number of students adding the course: "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "3\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " Total number of students:  38\n"
       ]
      }
     ],
     "prompt_number": 1
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 4.2, page no. 84"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "\n",
      "firstName = \"Jeff\"\n",
      "lastName = \"Kent\"\n",
      "print \"Your name is \", firstName + lastName"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Your name is  JeffKent\n"
       ]
      }
     ],
     "prompt_number": 2
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 4.3, page no. 84"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "\n",
      "print \"Enter number of preregistered students: \",\n",
      "total = int(raw_input())\n",
      "print \"Enter number of students adding the course: \",\n",
      "added = int(raw_input())\n",
      "total = total + added\n",
      "print \"How many students dropped? \",\n",
      "dropped = int(raw_input())\n",
      "total -= dropped\n",
      "print \"Total number of students: \", total"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter number of preregistered students: "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "30\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " Enter number of students adding the course: "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "3\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " How many students dropped? "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "5\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " Total number of students:  28\n"
       ]
      }
     ],
     "prompt_number": 3
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "exampe 4.4, page no. 85"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "\n",
      "print \"Enter number of preregistered students: \",\n",
      "total = int(raw_input())\n",
      "print \"Enter number of students adding the course: \",\n",
      "added = int(raw_input())\n",
      "total = total + added\n",
      "print \"How many students dropped? \",\n",
      "dropped = int(raw_input())\n",
      "total -= dropped\n",
      "print \"Total number of students: \", total\n",
      "print \"Total tuition owed: $\",((total + dropped) * 72)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter number of preregistered students: "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "30\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " Enter number of students adding the course: "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "3\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " How many students dropped? "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "5\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " Total number of students:  28\n",
        "Total tuition owed: $ 2376\n"
       ]
      }
     ],
     "prompt_number": 5
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 4.5, page no. 88"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "\n",
      "firstOp = 10\n",
      "secondOp = 4\n",
      "result = firstOp / secondOp\n",
      "print firstOp, \" / \", secondOp, \" = \", result"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "10  /  4  =  2\n"
       ]
      }
     ],
     "prompt_number": 6
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 4.6, page no. 88"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "\n",
      "firstOp = 10.0\n",
      "secondOp = 4.0\n",
      "result = firstOp / secondOp\n",
      "print firstOp, \" / \", secondOp, \" = \", result"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "10.0  /  4.0  =  2.5\n"
       ]
      }
     ],
     "prompt_number": 7
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 4.7, page no. 89"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "\n",
      "firstOp = 10\n",
      "secondOp = 4\n",
      "result = float(firstOp) / float(secondOp) #converting both the variables to float\n",
      "print firstOp, \" / \", secondOp, \" = \", result"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "10  /  4  =  2.5\n"
       ]
      }
     ],
     "prompt_number": 8
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 4.8, page no. 89"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "\n",
      "print \"Enter number of preregistered students: \",\n",
      "total = int(raw_input())\n",
      "print \"Enter number of students adding the course: \",\n",
      "added = int(raw_input())\n",
      "total = total + added\n",
      "print \"How many students dropped? \",\n",
      "dropped = int(raw_input())\n",
      "total -= dropped\n",
      "print \"Total number of students: \", total\n",
      "tuition = (total + dropped) * 72\n",
      "print \"Total tuition owed: $\",tuition\n",
      "print \"Average tuition per enrolled student: $\", (float(tuition)/float(total))"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter number of preregistered students: "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "30\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " Enter number of students adding the course: "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "3\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " How many students dropped? "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "5\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " Total number of students:  28\n",
        "Total tuition owed: $ 2376\n",
        "Average tuition per enrolled student: $ 84.8571428571\n"
       ]
      }
     ],
     "prompt_number": 9
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 4.9, page no. 91"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "\n",
      "print \"Enter radius of circle: \",\n",
      "radius = float(raw_input())\n",
      "area = 3.14159 * pow(radius, 2);\n",
      "print \"The area is \", area"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter radius of circle: "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "6\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " The area is  113.09724\n"
       ]
      }
     ],
     "prompt_number": 11
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 4.10, page no. 92"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "\n",
      "print \"Enter number of pennies to make change for: \",\n",
      "total = int(raw_input())\n",
      "dollars = total / 100\n",
      "leftover = total % 100\n",
      "quarters = leftover / 25\n",
      "leftover %= 25\n",
      "dimes = leftover / 10\n",
      "leftover %= 10\n",
      "nickels = leftover / 5\n",
      "leftover %= 5\n",
      "print \"Dollars: \", dollars\n",
      "print \"Quarters: \", quarters\n",
      "print \"Dimes: \", dimes\n",
      "print \"Nickels: \", nickels\n",
      "print \"Pennies: \", leftover"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Enter number of pennies to make change for: "
       ]
      },
      {
       "name": "stdout",
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "387\n"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        " Dollars:  3\n",
        "Quarters:  3\n",
        "Dimes:  1\n",
        "Nickels:  0\n",
        "Pennies:  2\n"
       ]
      }
     ],
     "prompt_number": 12
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [],
     "language": "python",
     "metadata": {},
     "outputs": []
    }
   ],
   "metadata": {}
  }
 ]
}