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  1. // process_mix_of_items.cpp : Defines the entry point for the console application.
  2. //
  3.  
  4. #include <string>
  5. #include <iostream>
  6.  
  7. //#include "holdCommandWindow.h"
  8.  
  9. class Personal_details {
  10.  
  11. public: 	
  12.  
  13. 	virtual void showdata(int i) {}
  14.  
  15. };
  16.  
  17. class Phone_extension : Personal_details {
  18.  
  19. public: 	
  20.  
  21. 	unsigned int areaCode;
  22.  
  23.     unsigned long sevenDigitNumber;
  24.  
  25. 	Phone_extension(unsigned int aCode, unsigned long sDNumber) {
  26.  
  27. 	areaCode = aCode;
  28. 	sevenDigitNumber = sDNumber;
  29.  
  30. 	}
  31.  
  32. 	void showdata(int i){
  33.  
  34. 	    std::cout << "Element index number " << i << " is a Phone extension (" << areaCode << ") " << sevenDigitNumber << "\n";
  35.  
  36. 	}
  37.  
  38. };
  39.  
  40. class Age : Personal_details {
  41.  
  42. public: 	
  43.  
  44.     unsigned int ageYears;
  45.  
  46. 	Age(unsigned int aYears) {
  47.  
  48. 	ageYears = aYears;
  49.  
  50. 	}
  51.  
  52. 	void showdata(int i){
  53.  
  54.         std::cout << "Element index number " << i << " is a Age " << ageYears << "\n";
  55.  
  56. 	}	
  57.  
  58. };
  59.  
  60. class House_number : Personal_details {
  61.  
  62. public: 	
  63.  
  64.     unsigned long houseNumber;
  65.  
  66. 	House_number(unsigned long hNumber) {
  67.  
  68. 	houseNumber = hNumber;
  69.  
  70. 	}
  71.  
  72. 	void showdata(int i){
  73.  
  74.         std::cout << "Element index number " << i << " is a House number " << houseNumber << "\n";
  75.  
  76. 	}	
  77.  
  78. };
  79. /*
  80. void showData(void *data[], int nData)
  81. {
  82.     std::cout << "\n";
  83.  
  84.     for ( int i=0; i < nData; ++i ) {
  85.  
  86.         id_kind id = *(reinterpret_cast<const id_kind*>(data[i]));
  87.  
  88.         std::cout << "Element index number " << i << " is a "; 
  89.  
  90.         switch ( id ) {
  91.         
  92.         case id_phone_extension:
  93.  
  94.             const phone_extension *pPhone;
  95.                 
  96.             pPhone = reinterpret_cast<const phone_extension*>(data[i]);
  97.  
  98.             std::cout << "Phone extension (" << pPhone->areaCode << ") " << pPhone->sevenDigitNumber << "\n";
  99.  
  100.             break;
  101.  
  102.         case id_age:
  103.             
  104.             const age *pAge;
  105.             
  106.             pAge = reinterpret_cast<const age*>(data[i]);
  107.  
  108.             std::cout << "Age " << pAge->ageYears << "\n";
  109.  
  110.             break;
  111.  
  112.         case id_house_number:
  113.  
  114.             const house_number *pHouse;
  115.             
  116.             pHouse = reinterpret_cast<const house_number*>(data[i]);
  117.  
  118.             std::cout << "House number " << pHouse->houseNumber << "\n";
  119.             
  120.             break;
  121.         }
  122.     }
  123. }
  124. */
  125.  
  126. int main()
  127. {
  128.  
  129.     int i;
  130.  
  131. 	Phone_extension pe = new Phone_extension(313, 4567892);
  132.  
  133.     Personal_details  pd;
  134.  
  135.     pd = &pe;
  136.    // pd[1] = new Phone_extension(800, 3334455);
  137.     //pd[2] = new Age( 39);
  138.    // pd[3] = new Age(21);
  139.    // pd[4] = new Age(44842);
  140.  
  141. //	for(i=0;i<5;i++)
  142. //	{
  143.  
  144. 	pd->showData(1);
  145.  
  146. //	}
  147.  
  148. //	return holdCommandWindow();
  149. }
  150.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:131: error: conversion from ‘Phone_extension*’ to non-scalar type ‘Phone_extension’ requested
prog.cpp:135: error: no match for ‘operator=’ in ‘pd = & pe’
prog.cpp:9: note: candidates are: Personal_details& Personal_details::operator=(const Personal_details&)
prog.cpp:144: error: base operand of ‘->’ has non-pointer type ‘Personal_details’
prog.cpp:129: warning: unused variable ‘i’
stdout
copy 
Standard output is empty
https://ideone.com/bq23l
language:
C++ (gcc 8.3)
created:
14 years ago
visibility:
public

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