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+{
+ "metadata": {
+  "name": "Chapter 19"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": "Chapter 19: Ancient compilers"
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": "Example 19.1, Page number: 385"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "# Example 19.1.py\n# To calculate the area of a rectangle\n\n\n# Function declaration\ndef area (width, height) :\n   return width * height\n\n# Calculation and result\nsize = area (3.0, 2)\nprint ('Area is %f\\n' % size)",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "Area is 6.000000\n\n"
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": "Example 19.2, Page number: 386"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "# Example 19.2.py\n# To calculate the square of a number\n\n\n# Function declaration\ndef square (s) :\n   return s * s\n\n# Calculation and result\ni = square (5)\nprint ('i is %d\\n' % i)",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "i is 25\n\n"
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": "Example 19.3, Page number: 386"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "# Example 19.3.py\n# To calculate the sum of 3 numbers\n\n\n# Function declaration\ndef sum (i1, i2, i3) :\n   return i1 + i2 + i3\n\n# Calculation and result\nprint ('Sum is %d\\n' % sum (1, 2, 3))",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "Sum is 6\n\n"
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": "Example 19.4, Page number: 387"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "# Example 19.4.py\n# To print the full name of a person\n\n\n# Variable declaration\nfirst = 'John'\nlast = 'Doe'\n\n# Calculation and result\nfull = first + ' ' + last\nprint ('The name is %s\\n' % full)",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "The name is John Doe\n\n"
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": "Example 19.5, Page number: 390"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "# Example 19.5.py\n# To calculate the area of a rectangle\n\n\n# Function declaration\ndef area (width, height) :\n   return width * height\n\n# Calculation and result\nsize = area (3.0, 2.0)\nprint ('Area is %f\\n' % size)",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "Area is 6.000000\n\n"
+      }
+     ],
+     "prompt_number": 5
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file