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{
"metadata": {
"name": ""
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h1>Chapter 11: Storage Class<h1>"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 11.1, Page number: 376<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Working of auto variable\n",
"\n",
"import sys\n",
"\n",
"#Functio definitions\n",
"def call1():\n",
" v = 20\n",
" sys.stdout.write(\"\\nV = %d\"%(v))\n",
" \n",
"def call2():\n",
" v = 30\n",
" call1()\n",
" sys.stdout.write(\"\\nV = %d\"%(v))\n",
" \n",
"#Variable Initialization\n",
"v = 10\n",
"\n",
"#Function call\n",
"call2()\n",
"\n",
"#Result\n",
"sys.stdout.write(\"\\nV = %d\"%(v))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"V = 20\n",
"V = 30\n",
"V = 10"
]
}
],
"prompt_number": 1
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 11.2, Page number: 376<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Working of auto variables in different blocks\n",
"\n",
"import sys\n",
"\n",
"#Variable Initialization\n",
"x = 10\n",
"\n",
"sys.stdout.write(\"\\nX = %d\"%(x))\n",
"\n",
"x = 20\n",
"sys.stdout.write(\"\\nX = %d\"%(x))\n",
"\n",
"x = 10\n",
"sys.stdout.write(\"\\nX = %d\"%(x))\n",
"\n",
"#In python, block of statements are indicated using intendation.\n",
"#block of statements can be written for conditional,loop or function statements"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"X = 10\n",
"X = 20\n",
"X = 10"
]
}
],
"prompt_number": 5
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 11.3, Page number: 377<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Use same variable in different blocks with different data types\n",
"\n",
"import sys\n",
"\n",
"#Variable Initialization & Result\n",
"x = 10\n",
"sys.stdout.write(\"\\nX = %d\"%(x))\n",
"\n",
"x = 2.22\n",
"sys.stdout.write(\"\\nX = %g\"%(x))\n",
"\n",
"x = \"Auto Storage Class\"\n",
"sys.stdout.write(\"\\nX = %s\"%(x))\n",
"\n",
"x = 10\n",
"sys.stdout.write(\"\\nX = %d\"%(x))\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"X = 10\n",
"X = 2.22\n",
"X = Auto Storage Class\n",
"X = 10"
]
}
],
"prompt_number": 7
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 11.4, Page number: 378<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Working of external variables\n",
"\n",
"import sys\n",
"\n",
"#Function definitions\n",
"def call1():\n",
" sys.stdout.write(\"\\nIn Call1() V = %d\"%(v))\n",
" \n",
"def call2():\n",
" sys.stdout.write(\"\\nIn call2() V = %d\"%(v))\n",
" \n",
"#Variable Initialization\n",
"global v\n",
"v = 10\n",
"\n",
"call1()\n",
"call2()\n",
"sys.stdout.write(\"\\nIn main() V = %d\"%(v))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"In Call1() V = 10\n",
"In call2() V = 10\n",
"In main() V = 10"
]
}
],
"prompt_number": 8
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 11.5, Page number: 379<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Working of auto and global variables with same name\n",
"\n",
"import sys\n",
"\n",
"#Function definitions\n",
"def call1():\n",
" v = 20\n",
" sys.stdout.write(\"\\nIn Call1() V = %d\"%(v))\n",
" \n",
"def call2():\n",
" sys.stdout.write(\"\\nIn call2() V = %d\"%(v))\n",
" \n",
"#Variable Initialization\n",
"global v\n",
"v = 10\n",
"\n",
"#Function call\n",
"call1()\n",
"call2()\n",
"\n",
"#Result\n",
"sys.stdout.write(\"\\nIn main() V = %d\"%(v))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"In Call1() V = 20\n",
"In call2() V = 10\n",
"In main() V = 10"
]
}
],
"prompt_number": 9
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 11.6, Page number: 380<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Declare external variables using extern keyword\n",
"\n",
"#Variable Initialization\n",
"global m\n",
"m = 10\n",
"\n",
"#There is no extern keyword in python, global is used instead\n",
"sys.stdout.write(\"\\nM = %d\"%(m))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"M = 10"
]
}
],
"prompt_number": 10
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 11.7, Page number: 380<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Use of static variable\n",
"\n",
"import sys\n",
"\n",
"#Function definition\n",
"def print1(m):\n",
" sys.stdout.write(\"\\nm = %d\"%(m))\n",
" if m == 3:\n",
" return\n",
" \n",
"m = 0\n",
"\n",
"for i in range(0,3):\n",
" m += 1\n",
" print1(m)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"m = 1\n",
"m = 2\n",
"m = 3"
]
}
],
"prompt_number": 15
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 11.8, Page number: 381<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Difference between variables of auto and static class\n",
"\n",
"import sys\n",
"\n",
"#Result\n",
"y = 0\n",
"sys.stdout.write(\"\\nx = %d & y = %d\"%(x,y))\n",
"\n",
"#Since x display the junk value which stored already, it differs in different systems"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"x = 10 & y = 0"
]
}
],
"prompt_number": 16
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 11.9, Page number: 382<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Register class variable\n",
"\n",
"import sys\n",
"\n",
"#There is no register keyword in python\n",
"m = 1\n",
"\n",
"#Result\n",
"for m in range(1,5+1):\n",
" sys.stdout.write(\"\\t%d\"%(m))\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\t1\t2\t3\t4\t5"
]
}
],
"prompt_number": 18
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<h3>Example 11.10, Page number: 382<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Register class variable\n",
"\n",
"import sys\n",
"\n",
"#There is no register class variable in python\n",
"m = 1\n",
"\n",
"for m in range(1,6):\n",
" sys.stdout.write(\"\\t%d\"%(m))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\t1\t2\t3\t4\t5"
]
}
],
"prompt_number": 19
},
{
"cell_type": "code",
"collapsed": false,
"input": [],
"language": "python",
"metadata": {},
"outputs": []
}
],
"metadata": {}
}
]
}
|
