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-{
- "metadata": {
- "name": "",
- "signature": "sha256:13c473411b35212c9727620c7673dc52636d4bf1a83b0d4eeb082d160a75324d"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
- {
- "cells": [
- {
- "cell_type": "heading",
- "level": 1,
- "metadata": {},
- "source": [
- "Chapter 12 : Union"
- ]
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example: 1, Page No.5.87"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#program using union.\n",
- "\n",
- "class union_name:\n",
- " a=0\n",
- " b=[0,1]\n",
- " \n",
- "c=union_name()\n",
- "c.a=256\n",
- "\n",
- "print \"c.a value is %d\\n \"%c.a\n",
- "print \"c.b[0] value is %d\\n\"%c.b[0]\n",
- "print \"c.b[1] value is %d\\n\"%c.b[1]\n",
- "\n",
- "\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "c.a value is 256\n",
- " \n",
- "c.b[0] value is 0\n",
- "\n",
- "c.b[1] value is 1\n",
- "\n"
- ]
- }
- ],
- "prompt_number": 1
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example: 2, Page No.:5.87"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#program to find size of union and number of bytes\n",
- "\n",
- "import sys\n",
- "\n",
- "class union_result:\n",
- " marks=0\n",
- " grade=''\n",
- " \n",
- " \n",
- "class struct_res:\n",
- " name=[15]\n",
- " age=0\n",
- " sex=''\n",
- " address=''\n",
- " pincode=0\n",
- " perf=union_result()\n",
- " \n",
- "data=struct_res() \n",
- "\n",
- "#Result\n",
- "print \"Size of Union: %d\\n\"%sys.getsizeof(data.perf)\n",
- "print \"Size of Structure: %d\\n\"%sys.getsizeof(data)\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Size of Union: 32\n",
- "\n",
- "Size of Structure: 32\n",
- "\n"
- ]
- }
- ],
- "prompt_number": 5
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Pointer to Unions cannot convert as no pointer in python. Page no. 5.88"
- ],
- "language": "python",
- "metadata": {},
- "outputs": []
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example: 3, Page No.:5.89"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Program that includes of initial values to structure variable\n",
- "\n",
- "import sys\n",
- "\n",
- "\n",
- "class union_id:\n",
- " color='20'\n",
- " size=0\n",
- " \n",
- "\n",
- "class struct_clothes:\n",
- " manufacturer='30'\n",
- " cost=0.0\n",
- " description=union_id()\n",
- " \n",
- " \n",
- "shirt=struct_clothes()\n",
- "shirt.manufacturer='Indian'\n",
- "shirt.cost=35.00\n",
- "shirt.description.color='Black'\n",
- "\n",
- "print \"%d\\n\"%(sys.getsizeof(union_id))\n",
- "\n",
- "print \"%s %f \"%(shirt.manufacturer,shirt.cost),\"%s %d\\n \"%(shirt.description.color, shirt.description.size)\n",
- " \n",
- "\n",
- "shirt.description.size =12\n",
- "\n",
- "\n",
- "print \"%s %f \"%(shirt.manufacturer, shirt.cost),\"%s %d\\n \"%(shirt.description.color, shirt.description.size)\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "48\n",
- "\n",
- "Indian 35.000000 Black 0\n",
- " \n",
- "Indian 35.000000 Black 12\n",
- " \n"
- ]
- }
- ],
- "prompt_number": 6
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example: 4, Page no.: 5.92"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Program to read and write employee and their date of joining using nested structure. \n",
- "\n",
- "\n",
- "class date:\n",
- " day=0\n",
- " month=\"\"\n",
- " year=0\n",
- " \n",
- "class employee:\n",
- " code=0\n",
- " name=''\n",
- " salary=0.0\n",
- " doj=date()\n",
- " \n",
- " \n",
- "emp1=employee()\n",
- "\n",
- "emp1.code=input(\"Enter Employee Code: \")\n",
- "emp1.name=raw_input(\"Enter the Employee Name: \")\n",
- "emp1.salary=input(\"Enter the Employee Salary: \")\n",
- "\n",
- "print \"\\nEnter Date of joining in order\\n\"\n",
- "emp1.doj.day=input(\"Enter day: \")\n",
- "emp1.doj.month=raw_input(\"Enter month: \")\n",
- "emp1.doj.year=input(\"Enter year: \")\n",
- "\n",
- "print \"\\nThe Employee Code is: %d\"%emp1.code\n",
- "print \"\\nThe Employee Name is: %s\"%emp1.name\n",
- "print \"\\nThe Employee Name is: %f\"%emp1.salary\n",
- "print \"\\nThe Employee DOJ is: %d %s %d\"%(emp1.doj.day,emp1.doj.month,emp1.doj.year)\n",
- "\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter Employee Code: 200\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Employee Name: VIJI\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Employee Salary: 2000.00\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "\n",
- "Enter Date of joining in order\n",
- "\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter day: 12\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter month: December\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter year: 2004\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "\n",
- "The Employee Code is: 200\n",
- "\n",
- "The Employee Name is: VIJI\n",
- "\n",
- "The Employee Name is: 2000.000000\n",
- "\n",
- "The Employee DOJ is: 12 December 2004\n"
- ]
- }
- ],
- "prompt_number": 7
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example: 5, Page No. 5.93"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Program to store 3 records in one structure\n",
- "\n",
- "\n",
- "class book:\n",
- " name=''\n",
- " price=0\n",
- " pages=0\n",
- " \n",
- " \n",
- "b=[book() for a in range(0,3)]\n",
- "\n",
- "for i in range(0,3):\n",
- " b[i].name=raw_input(\"Enter the Book Name: \")\n",
- " b[i].price=input(\"Enter the Book Price: \")\n",
- " b[i].pages=input(\"Enter the Book Pages: \")\n",
- " \n",
- "print '\\n' \n",
- "for i in range(0,3):\n",
- " print \"%s\\t\"%(b[i].name),\"%d\\t\"%(b[i].price),\"%d\\n\"%(b[i].pages)"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Book Name: English\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Book Price: 165\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Book Pages: 200\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Book Name: Maths\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Book Price: 300\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Book Pages: 450\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Book Name: Physics\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Book Price: 250\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Book Pages: 370\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "\n",
- "\n",
- "English\t165\t200\n",
- "\n",
- "Maths\t300\t450\n",
- "\n",
- "Physics\t250\t370\n",
- "\n"
- ]
- }
- ],
- "prompt_number": 8
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example: 6, Page No. 5.95"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Program to copy of entire structure to a function\n",
- "\n",
- "class std:\n",
- " no=0\n",
- " avg=0.0\n",
- "\n",
- "a=std()\n",
- "\n",
- "a.no=15\n",
- "a.avg=90.75\n",
- "\n",
- "def func(Struct_p):\n",
- " print \"Number is.... %d\\n\"%a.no\n",
- " print \"Average is... %f\"%a.avg\n",
- " \n",
- "func(a)\n",
- "\n",
- " "
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Number is.... 15\n",
- "\n",
- "Average is... 90.750000\n"
- ]
- }
- ],
- "prompt_number": 9
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example: 7, Page No.:5.97"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "#Programs shows how the structure can be accessed by a pointer variable.\n",
- "\n",
- "class student:\n",
- " roll_no=0\n",
- " name=''\n",
- " marks=0.0\n",
- "stud1=student()\n",
- "\n",
- "print \"Enter the student details: \\n\"\n",
- "stud1.roll_no=input()\n",
- "stud1.name=raw_input()\n",
- "stud1.marks=input()\n",
- "\n",
- "print \"\\nDisplay of structure using structure variable\\n\"\n",
- "print \"Roll No\\t Name\\t Marks\"\n",
- "print \"\\n-------\\t ----- -------\\n\"\n",
- "print \"%d\\t %s\\t %f\"%(stud1.roll_no,stud1.name,stud1.marks)\n",
- "\n",
- "pt=stud1\n",
- "\n",
- "print \"\\nDisplay of structure using pointer variable\\n\"\n",
- "print \"Roll No\\t Name\\t Marks\"\n",
- "print \"\\n-------\\t ----- -------\\n\"\n",
- "print \"%d\\t %s\\t %f\"%(pt.roll_no,pt.name,pt.marks)\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the student details: \n",
- "\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "39\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Muni\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "77\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "\n",
- "Display of structure using structure variable\n",
- "\n",
- "Roll No\t Name\t Marks\n",
- "\n",
- "-------\t ----- -------\n",
- "\n",
- "39\t Muni\t 77.000000\n",
- "\n",
- "Display of structure using pointer variable\n",
- "\n",
- "Roll No\t Name\t Marks\n",
- "\n",
- "-------\t ----- -------\n",
- "\n",
- "39\t Muni\t 77.000000\n"
- ]
- }
- ],
- "prompt_number": 6
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Case Study: 1, Page No.:5.98"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Program to transfer a structure to a function by passing the structure address to the function\n",
- "\n",
- "class struct:\n",
- " name=''\n",
- " no=0\n",
- " age=0\n",
- "record=struct()\n",
- "std=record\n",
- "std.name,std.no,std.age=[\"LAK\",15,25]\n",
- "print \"%s\\t%d\\t%d\"%(std.name,std.no,std.age)\n",
- "\n",
- "def fun(std):\n",
- " pt.name=\"Muni\"\n",
- " pt.no=16\n",
- " pt.age=26\n",
- " \n",
- "std.name=pt.name\n",
- "std.no=pt.no\n",
- "std.age=pt.age\n",
- "\n",
- "print \"%s\\t%d\\t%d\"%(std.name,std.no,std.age)\n",
- " \n",
- " "
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "LAK\t15\t25\n",
- "Muni\t16\t26\n"
- ]
- }
- ],
- "prompt_number": 24
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Case Study: 2, Page No.:5.100"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Program to pass an array of structure to a function, and return a pointer to a structure.\n",
- "import sys\n",
- "N=3\n",
- "NULL=0\n",
- "\n",
- "class struct:\n",
- " sno=0\n",
- " name=''\n",
- " age=0\n",
- " \n",
- "record=struct()\n",
- "std=record\n",
- "\n",
- "print \"Student Number Locater\"\n",
- "print \"To Exit the program enter '0' for student number\"\n",
- "stdno=input(\"Enter the Student Number: \")\n",
- "print \"\\n\"\n",
- "if stdno ==15:\n",
- "\n",
- " std.sno,std.name,std.age=[15,\"MUNI\",28]\n",
- " print \"Number .... %d \\n\"%(std.sno)\n",
- " print \"Name ...... %s\\n\"%(std.name)\n",
- " print \"Age ....... %d\\n\"%(std.age)\n",
- "if stdno == 16:\n",
- " std.sno,std.name,std.age=[16,\"LAK\",27]\n",
- " print \"Number .... %d \\n\"%(std.sno)\n",
- " print \"Name ...... %s\\n\"%(std.name)\n",
- " print \"Age ....... %d\\n\"%(std.age)\n",
- " \n",
- "if stdno == 17:\n",
- " std.sno,std.name,std.age=[17,\"RAJA\",31]\n",
- " print \"Number .... %d \\n\"%(std.sno)\n",
- " print \"Name ...... %s\\n\"%(std.name)\n",
- " print \"Age ....... %d\\n\"%(std.age)\n",
- " \n",
- "if stdno==0:\n",
- " exit\n",
- "\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Student Number Locater\n",
- "To Exit the program enter '0' for student number\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter the Student Number: 15\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "\n",
- "\n",
- "Number .... 15 \n",
- "\n",
- "Name ...... MUNI\n",
- "\n",
- "Age ....... 28\n",
- "\n"
- ]
- }
- ],
- "prompt_number": 5
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Case Study: 3, Page No.: 5.101"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Program to print student name and mark using structure\n",
- "\n",
- "class student:\n",
- " name=''\n",
- " marks=0.00\n",
- " \n",
- "s1=''\n",
- "f=0.00\n",
- "\n",
- "student1=student()\n",
- "\n",
- "student2=student()\n",
- "\n",
- "\n",
- "student1.name=raw_input(\"Enter Name: \")\n",
- "f=input(\"Enter Mark: \")\n",
- "\n",
- "student2.marks=f\n",
- "\n",
- "print \"\\nName is %s \\n\"%student1.name\n",
- "print \"Marks are %f \\n\"%student2.marks\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter Name: Venkat\n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter Mark: 89\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "\n",
- "Name is Venkat \n",
- "\n",
- "Marks are 89.000000 \n",
- "\n"
- ]
- }
- ],
- "prompt_number": 10
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Case Study 4, Page No.: 5.102"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Program to print marks, grade and their address using union\n",
- "\n",
- "\n",
- "\n",
- "class union_marks:\n",
- " perc=0.00\n",
- " grade=''\n",
- " \n",
- "student1=union_marks()\n",
- "\n",
- "student1.perc=98.5\n",
- "\n",
- "print \"Marks are %f \\t address is %8lu\\n\"%(student1.perc, id(student1.perc))\n",
- "\n",
- "student1.grade='A'\n",
- "\n",
- "print \"Grade is %c \\t address is %8lu\\n\"%(student1.grade,id(student1.grade))"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Marks are 98.500000 \t address is 158368916\n",
- "\n",
- "Grade is A \t address is 3073485064\n",
- "\n"
- ]
- }
- ],
- "prompt_number": 11
- }
- ],
- "metadata": {}
- }
- ]
-} \ No newline at end of file
generated by cgit (git 2.34.1) at 2025-01-09 10:40:29 +0000