Mercurial > hg > Members > aka > jupyter_CbC_kernel

comparison Example of C notebook.ipynb @ 5:c4f5d97f80d0

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Add example notebook
author Brendan Rius <brendan@omixy.com>
date Fri, 25 Mar 2016 14:30:05 +0000
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4:5c4b5066fab0 5:c4f5d97f80d0
1 {
2 "cells": [
3 {
4 "cell_type": "markdown",
5 "metadata": {},
6 "source": [
7 "# Valid code"
8 ]
9 },
10 {
11 "cell_type": "code",
12 "execution_count": 1,
13 "metadata": {
14 "collapsed": false
15 },
16 "outputs": [
17 {
18 "name": "stderr",
19 "output_type": "stream",
20 "text": []
21 },
22 {
23 "name": "stdout",
24 "output_type": "stream",
25 "text": [
26 "Hello world\n"
27 ]
28 }
29 ],
30 "source": [
31 "#include <stdio.h>\n",
32 "\n",
33 "int main() {\n",
34 " printf(\"Hello world\\n\");\n",
35 "}"
36 ]
37 },
38 {
39 "cell_type": "markdown",
40 "metadata": {},
41 "source": [
42 "But the kernel will also display compilations warnings and errors if we have some. Let's try to remove the `#include <stdio.h>` statement, which if necessary for `printf` to work."
43 ]
44 },
45 {
46 "cell_type": "markdown",
47 "metadata": {},
48 "source": [
49 "# Code generating warnings during compilation"
50 ]
51 },
52 {
53 "cell_type": "code",
54 "execution_count": 2,
55 "metadata": {
56 "collapsed": false
57 },
58 "outputs": [
59 {
60 "name": "stderr",
61 "output_type": "stream",
62 "text": [
63 "/var/folders/31/qct57s856n5f0b2r4tgbmn1c0000gn/T/tmp0Qan0v.c:2:5: warning: implicitly declaring library function 'printf' with type 'int (const char *, ...)' [-Wimplicit-function-declaration]\n",
64 " printf(\"Hello world\\n\");\n",
65 " ^\n",
66 "/var/folders/31/qct57s856n5f0b2r4tgbmn1c0000gn/T/tmp0Qan0v.c:2:5: note: include the header <stdio.h> or explicitly provide a declaration for 'printf'\n",
67 "1 warning generated.\n"
68 ]
69 },
70 {
71 "name": "stdout",
72 "output_type": "stream",
73 "text": [
74 "Hello world\n"
75 ]
76 }
77 ],
78 "source": [
79 "int main() {\n",
80 " printf(\"Hello world\\n\");\n",
81 "}"
82 ]
83 },
84 {
85 "cell_type": "markdown",
86 "metadata": {},
87 "source": [
88 "You can see that the warning are displayed, but the code is still executed."
89 ]
90 },
91 {
92 "cell_type": "markdown",
93 "metadata": {},
94 "source": [
95 "# Code generating errors during compilation"
96 ]
97 },
98 {
99 "cell_type": "code",
100 "execution_count": 3,
101 "metadata": {
102 "collapsed": false
103 },
104 "outputs": [
105 {
106 "name": "stderr",
107 "output_type": "stream",
108 "text": [
109 "/var/folders/31/qct57s856n5f0b2r4tgbmn1c0000gn/T/tmpw4Kz3c.c:2:5: warning: implicitly declaring library function 'printf' with type 'int (const char *, ...)' [-Wimplicit-function-declaration]\n",
110 " printf(\"Hello world\")\n",
111 " ^\n",
112 "/var/folders/31/qct57s856n5f0b2r4tgbmn1c0000gn/T/tmpw4Kz3c.c:2:5: note: include the header <stdio.h> or explicitly provide a declaration for 'printf'\n",
113 "/var/folders/31/qct57s856n5f0b2r4tgbmn1c0000gn/T/tmpw4Kz3c.c:2:26: error: expected ';' after expression\n",
114 " printf(\"Hello world\")\n",
115 " ^\n",
116 " ;\n",
117 "1 warning and 1 error generated.\n",
118 "[C kernel] GCC exited with code 1, the executable will not be executed"
119 ]
120 },
121 {
122 "name": "stdout",
123 "output_type": "stream",
124 "text": []
125 }
126 ],
127 "source": [
128 "int main() {\n",
129 " printf(\"Hello world\")\n",
130 "}"
131 ]
132 },
133 {
134 "cell_type": "markdown",
135 "metadata": {},
136 "source": [
137 "You can see that the errors and warnings are shown, but the code is not executed. The retcode is also added to the end of `stderr`"
138 ]
139 },
140 {
141 "cell_type": "code",
142 "execution_count": null,
143 "metadata": {
144 "collapsed": true
145 },
146 "outputs": [],
147 "source": []
148 }
149 ],
150 "metadata": {
151 "kernelspec": {
152 "display_name": "C",
153 "language": "c",
154 "name": "c_kernel"
155 },
156 "language_info": {
157 "file_extension": "c",
158 "mimetype": "text/plain",
159 "name": "c"
160 }
161 },
162 "nbformat": 4,
163 "nbformat_minor": 0
164 }