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| author | hardythe1 | 2015-01-30 12:30:05 +0530 |
|---|---|---|
| committer | hardythe1 | 2015-01-30 12:30:05 +0530 |
| commit | 62aa228e2519ac7b7f1aef53001f2f2e988a6eb1 (patch) | |
| tree | 7b632b21341f832c3d3b1352dabceaefb36c9a7b /Teach_Yourself_C_in_24_Hours/hour17.ipynb | |
| parent | 9add422993fb2649287260bc91d429a07d1810d5 (diff) | |
| download | Python-Textbook-Companions-62aa228e2519ac7b7f1aef53001f2f2e988a6eb1.tar.gz Python-Textbook-Companions-62aa228e2519ac7b7f1aef53001f2f2e988a6eb1.tar.bz2 Python-Textbook-Companions-62aa228e2519ac7b7f1aef53001f2f2e988a6eb1.zip | |
added books
Diffstat (limited to 'Teach_Yourself_C_in_24_Hours/hour17.ipynb')
| -rwxr-xr-x | Teach_Yourself_C_in_24_Hours/hour17.ipynb | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/Teach_Yourself_C_in_24_Hours/hour17.ipynb b/Teach_Yourself_C_in_24_Hours/hour17.ipynb new file mode 100755 index 00000000..94c20ee8 --- /dev/null +++ b/Teach_Yourself_C_in_24_Hours/hour17.ipynb @@ -0,0 +1,267 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:d4eeb6d301f04950d37e1192961f4665d398ce20c6e4b34ea5228762dfddaffa"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Hour 17: Allocating Memory"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 17.1, Page No 281"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# There is no concept of pointer and dynamic memory allocation in pyton so i have done in this manner\n",
+ "def StrCopy(str1,str2):\n",
+ " str1=list(str1)\n",
+ " str2=list(str2)\n",
+ " for i in range(len(str1)):\n",
+ " str2[i]=str1[i]\n",
+ " str2[i]='\\0'\n",
+ "\n",
+ "str1=\"Use malloc() to allocate memory\"\n",
+ "ptr_str=str\n",
+ "ptr_str= str1\n",
+ "\n",
+ "if(ptr_str!= None):\n",
+ " StrCopy(str1,ptr_str)\n",
+ " print \"The string pointed to by ptr_str is : %s\" % ptr_str\n",
+ "else:\n",
+ " print \"malloc() function failed.\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The string pointed to by ptr_str is : Use malloc() to allocate memory\n"
+ ]
+ }
+ ],
+ "prompt_number": 4
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 17.2, Page No 283"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# There is no concept of pointer and dynamic memory allocation in pyton so i have done in this manner\n",
+ "def DataMultiply(max1,ptr_int):\n",
+ " for i in range(max1):\n",
+ " for j in range(max1):\n",
+ " ptr_int=(i+1)*(j+1)\n",
+ " return ptr_int\n",
+ "def TablePrint(max1,ptr_int):\n",
+ " print \"The Multiplication table of %d is:\" % max1\n",
+ " print \"\"\n",
+ " for i in range(max1):\n",
+ " print \"%4d\" % (i+1),\n",
+ " print \"\"\n",
+ " for i in range(max1):\n",
+ " print \"----\",\n",
+ " print\"\"\n",
+ " for i in range(max1):\n",
+ " print \"%d|\" % (i+1),\n",
+ " for j in range(max1):\n",
+ " print \"%3d\" % ptr_int,\n",
+ " print\"\"\n",
+ "\n",
+ "ptr_int=int\n",
+ "ptr_int=0\n",
+ "key='c'\n",
+ "max1=0\n",
+ "termination=0\n",
+ "while(key != 'x'):\n",
+ " max1=int(raw_input(\"Enter a single digit number: \"))\n",
+ " if(ptr_int != None):\n",
+ " print ptr_int\n",
+ " ptr_int=DataMultiply(max1,ptr_int)\n",
+ " print ptr_int\n",
+ " TablePrint(max1,ptr_int)\n",
+ " else:\n",
+ " print \"Malloc() function failed.\"\n",
+ " termination=1\n",
+ " key='x'\n",
+ " key=raw_input(\"\\n\\nPress x key to quit; other key to continue.\")\n",
+ "print\"\\nBYE\\n\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Enter a single digit number: 3\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "0\n",
+ "3\n",
+ "The Multiplication table of 3 is:\n",
+ "\n",
+ " 1 2 3 \n",
+ "---- ---- ---- \n",
+ "1| 3 3 3 \n",
+ "2| 3 3 3 \n",
+ "3| 3 3 3 \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\n",
+ "\n",
+ "Press x key to quit; other key to continue.x\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\n",
+ "BYE\n",
+ "\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 17.3, Page No 287"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# There is no concept of pointer and dynamic memory allocation in pyton so i have done in this manner\n",
+ "ptr1=float\n",
+ "ptr2=float\n",
+ "ptr1=0.0\n",
+ "ptr2=0.0\n",
+ "termination=1\n",
+ "n=5\n",
+ "\n",
+ "if(ptr1 == None):\n",
+ " print \"Malloc() failed.\"\n",
+ "elif(ptr2 == None):\n",
+ " print \"Calloc() failed.\"\n",
+ "else:\n",
+ " for i in range(n):\n",
+ " print \"ptr1[%d]= %5.2f, ptr2[%d]= %5.2f\" %(i,(ptr1+i),i,(ptr2+i))\n",
+ " termination=0"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "ptr1[0]= 0.00, ptr2[0]= 0.00\n",
+ "ptr1[1]= 1.00, ptr2[1]= 1.00\n",
+ "ptr1[2]= 2.00, ptr2[2]= 2.00\n",
+ "ptr1[3]= 3.00, ptr2[3]= 3.00\n",
+ "ptr1[4]= 4.00, ptr2[4]= 4.00\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 17.4, Page No 289"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# There is no concept of pointer and dynamic memory allocation in pyton so i have done in this manner\n",
+ "def StrCopy(str1,str2):\n",
+ " str1=list(str1)\n",
+ " str2=list(str1)\n",
+ " for i in range(len(str1)-1):\n",
+ " str2[i]=str1[i]\n",
+ " str2[i]='\\0'\n",
+ " return str2\n",
+ "\n",
+ "str1=[\"There's music in the sighing of a reed;\",\"There's music in the gushing of a rill;\",\"There's music in all things if men had ears;\",\"There earth is but an echo of the spheres.\\n\"]\n",
+ "termination=0\n",
+ "if(ptr == None):\n",
+ " print \"Malloc() failed.\"\n",
+ " termination=1\n",
+ "else:\n",
+ " ptr1=StrCopy(str1[0],ptr)\n",
+ " print \"\".join(ptr1)\n",
+ " for i in range(1,4):\n",
+ " if (ptr == None):\n",
+ " print \"realloc() failed.\"\n",
+ " termination=1\n",
+ " i=4\n",
+ " else:\n",
+ " ptr1=StrCopy(str1[i],ptr)\n",
+ " print \"\".join(ptr1)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "There's music in the sighing of a ree\u0000;\n",
+ "There's music in the gushing of a ril\u0000;\n",
+ "There's music in all things if men had ear\u0000;\n",
+ "There earth is but an echo of the spheres\u0000\n",
+ "\n"
+ ]
+ }
+ ],
+ "prompt_number": 12
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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