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  1. #include <iostream>
  2. #include <cmath> 
  3. #include <stdexcept>
  4. #include <string.h>
  5.  
  6. using namespace std;
  7.  
  8. class Array  {
  9. public:
  10.     Array()  {
  11.         size = max_size;
  12.         ptr = new unsigned char[size];      
  13.     }
  14.     Array(int size)  {
  15.         if(size <= max_size)
  16.             this->size = size;
  17.         else
  18.             this->size = max_size;
  19.         ptr = new unsigned char[size];
  20.         for(int i = 0; i < size; i++)
  21.             ptr[i] = '0';
  22.     }
  23.     Array(const Array &obj)  {
  24.         size = obj.size;
  25.         ptr = new unsigned char[size];
  26.         for(int i = 0; i < size; i++)
  27.             ptr[i] = obj.ptr[i];
  28.     }
  29.     ~Array()  {
  30.         delete []ptr;
  31.     }
  32.     unsigned char &operator[](int index)  {
  33.         if(index >= 0 && index < size)
  34.             return ptr[index];
  35.         else
  36.             throw out_of_range("out_of_range");
  37.  
  38.     }
  39.     friend ostream &operator <<(ostream &os, const Array &obj)  {
  40.         for(int i = 0; i < obj.size; i++)
  41.             os << obj.ptr[i];
  42.         return os;
  43.     }
  44.  
  45.     virtual Array operator+(const Array &obj2)  {
  46.         for(int i = 0; i < obj2.size; i++)
  47.             this->ptr[i] = (int)this->ptr[i] + (int)obj2.ptr[i];
  48.     }
  49.  
  50. protected:
  51.     static const int max_size = 10;
  52.     unsigned char *ptr;
  53.     int size;
  54. };
  55.  
  56. class Money:public Array  {
  57. protected:
  58.     static const int max_size = 100;
  59.  
  60. };
  61.  
  62. int main()  {
  63. 	int n = 5;
  64.     Array table(n);
  65.     Array t(n);
  66.     cout << table;
  67.  
  68.     for(int i = 0; i < n; i++)
  69.         {table[i] = i;
  70.         t[i] = i + 3;}
  71.  
  72.     cout << table;
  73.     cout << t;
  74.     cout << table+t;
  75.  
  76.  
  77.     return 0;
  78. }
Success #stdin #stdout 0s 15240KB
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https://ideone.com/E6hLIe
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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