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Diffstat (limited to 'Practical_C_Programming/Chapter_14_1.ipynb')
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diff --git a/Practical_C_Programming/Chapter_14_1.ipynb b/Practical_C_Programming/Chapter_14_1.ipynb new file mode 100644 index 00000000..b2876b44 --- /dev/null +++ b/Practical_C_Programming/Chapter_14_1.ipynb @@ -0,0 +1,101 @@ +{ + "metadata": { + "name": "Chapter 14" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 3, + "metadata": {}, + "source": "Chapter 14: File input/output" + }, + { + "cell_type": "heading", + "level": 3, + "metadata": {}, + "source": "Example 14.1, Page number: 253" + }, + { + "cell_type": "code", + "collapsed": false, + "input": "# Example 14.1.py\n# To count the number of characters in the file 'input.txt'\n\n\n# Variable declaration\nimport os\ncount = 0\nin_file = open ('input.txt', 'r')\n \n# Calculation and result\nif not os.path.exists ('input.txt') :\n print ('Cannot open input.txt\\n')\n\nwhile (1) :\n ch = in_file.read(1)\n if not ch :\n break\n count += 1\n\nprint ('Number of characters in input.txt is %d\\n' % count)\n\nin_file.close()", + "language": "python", + "metadata": {}, + "outputs": [ + { + "ename": "IOError", + "evalue": "[Errno 2] No such file or directory: 'input.txt'", + "output_type": "pyerr", + "traceback": [ + "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[1;31mIOError\u001b[0m Traceback (most recent call last)", + "\u001b[1;32m<ipython-input-1-038814efe2a7>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m 6\u001b[0m \u001b[1;32mimport\u001b[0m \u001b[0mos\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 7\u001b[0m \u001b[0mcount\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;36m0\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m----> 8\u001b[1;33m \u001b[0min_file\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mopen\u001b[0m \u001b[1;33m(\u001b[0m\u001b[1;34m'input.txt'\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;34m'r'\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 9\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 10\u001b[0m \u001b[1;31m# Calculation and result\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n", + "\u001b[1;31mIOError\u001b[0m: [Errno 2] No such file or directory: 'input.txt'" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 3, + "metadata": {}, + "source": "Example 14.3, Page number: 257" + }, + { + "cell_type": "code", + "collapsed": false, + "input": "# Example 14.3.py\n# To check whether a file exists or not\n\n\n# Variable declaration\nimport sys\nimport os\nin_file = open ('input.txt', 'r')\n \n# Calculation and result\nif not os.path.exists (name) :\n print ('Could not open file\\n')\n sys.exit(1)\nprint ('File found\\n')\n\nin_file.close()", + "language": "python", + "metadata": {}, + "outputs": [ + { + "ename": "IOError", + "evalue": "[Errno 2] No such file or directory: 'input.txt'", + "output_type": "pyerr", + "traceback": [ + "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[1;31mIOError\u001b[0m Traceback (most recent call last)", + "\u001b[1;32m<ipython-input-2-370dc09ecbc3>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m 6\u001b[0m \u001b[1;32mimport\u001b[0m \u001b[0msys\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 7\u001b[0m \u001b[1;32mimport\u001b[0m \u001b[0mos\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m----> 8\u001b[1;33m \u001b[0min_file\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mopen\u001b[0m \u001b[1;33m(\u001b[0m\u001b[1;34m'input.txt'\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;34m'r'\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 9\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 10\u001b[0m \u001b[1;31m# Calculation and result\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n", + "\u001b[1;31mIOError\u001b[0m: [Errno 2] No such file or directory: 'input.txt'" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 3, + "metadata": {}, + "source": "Example 14.4, Page number: 260" + }, + { + "cell_type": "code", + "collapsed": false, + "input": "# Example 14.4.py\n# To write to a file\n\n\n# Variable declaration\nimport sys\nimport os\nout_file = open ('test.out', 'w')\n \n# Calculation and result\nif not os.path.exists ('test.out') :\n print ('Cannot open output file\\n')\n sys.exit(1)\n\nfor cur_char in range (0, 128) :\n out_file.write(str (cur_char))\n out_file.write('\\n')\n\nout_file.close()", + "language": "python", + "metadata": {}, + "outputs": [], + "prompt_number": 3 + }, + { + "cell_type": "heading", + "level": 3, + "metadata": {}, + "source": "Example 14.5, Page number: 267" + }, + { + "cell_type": "code", + "collapsed": false, + "input": "# Example 14.5.py\n# To copy the contents of a file to another file\n\n\n# Variable declaration\ntxt_file = open ('input.txt')\n\nsource_content = txt_file.read()\n\ntarget = open ('output.txt', 'w')\n\n# Calculation and result\ntarget.write(source_content)\nprint ('Content copied')\n\ntarget.close()", + "language": "python", + "metadata": {}, + "outputs": [] + } + ], + "metadata": {} + } + ] +}
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