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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. template <class T>
  5. class Vector
  6. {
  7.     friend istream & operator >> (istream & is, Vector & v)
  8.     {
  9.         cout<<"Vvedit vector rozmirom "<<v.n<<":"<<endl;
  10.          for(int i = 0; i <v.n; i++)
  11.              is>>v.a[i];
  12.          return is;
  13.     }
  14.  
  15.     friend ostream & operator << (ostream & os, const Vector & v)
  16.     {
  17.         v.show();
  18.         return os;
  19.     }
  20. private:
  21.     T *a; // masiv
  22.     int n; // rozmir mas
  23. public:
  24.     Vector();
  25.     Vector(int _n);
  26.     Vector(const Vector & v);//конструктор копіювання
  27.     void show()const;
  28.     //void setN();
  29.     ~Vector();
  30.     Vector operator + (const Vector & g);
  31.     Vector operator = (const Vector & g);
  32.     T operator * (const Vector & g);
  33. };
  34. //
  35. //template <class T>
  36. //    void Vector<T>::setN(int _n)
  37. //    {
  38. //        n = _n;        
  39. //    };
  40.  
  41. template <class T>
  42.     Vector<T> ::Vector()
  43.     {
  44.         n=3;
  45.         a = new T [3];
  46.         for(int i = 0; i < n; i++)
  47.             a[i] = 0;
  48.     }
  49.  
  50.     template <class T>
  51.     Vector<T>::Vector(int _n)
  52.     {
  53.         n=_n;
  54.         a = new T [_n];
  55.         for(int i = 0; i < _n; i++)
  56.             a[i] = 0;
  57.     }
  58.  
  59.     template <class T>
  60.     void Vector<T>::show()const
  61.     {
  62.         for(int i = 0; i < n; i++)    
  63.             cout<<a[i]<<" ";
  64.         cout<<endl;
  65.     };
  66.  
  67.     template <class T>
  68.     Vector<T>::~Vector()
  69.     {
  70.         //cout<<"distruct"<<endl;
  71.         delete []a;
  72.     };
  73.  
  74.  
  75.     template <class T>
  76.     Vector<T> Vector<T>::operator + (const Vector<T> & g)
  77.     {
  78.         Vector res(n);
  79.         if(n != g.n)
  80.         {
  81.             cout<<"no rozmir"<<endl;
  82.             return res;
  83.         } else {
  84.             for(int i = 0; i < n; i++)
  85.             {
  86.                 res.a[i] = a[i] + g.a[i];
  87.             }
  88.             cout<<"resultat: "<<res<<endl;
  89.             return res;
  90.         }
  91.     }
  92.  
  93.  
  94.     template <class T>
  95.     T Vector<T>::operator * (const Vector<T> & g){
  96.         T suma = 0;
  97.  
  98.         if(n != g.n){
  99.             cout<<"no rozmir"<<endl;
  100.             return suma;
  101.         } else {
  102.             for(int i = 0; i<n; i++)
  103.             {
  104.                 suma += a[i] * g.a[i];
  105.             }
  106.         }
  107.         return suma;
  108.     }
  109.  
  110.     template <class T>
  111.         Vector<T> Vector<T>::operator = (const Vector<T> & g)
  112.     {
  113.     //cout<<"operator = "<<endl;
  114.      Vector res(g.n);
  115.      for (int i = 0; i < g.n; i++)
  116.      {
  117.         res.a[i] = g.a[i];
  118.      }
  119.      return res;
  120.     }
  121.  
  122.     template <class T>
  123.     Vector<T>::Vector(const Vector<T> & v)
  124.     {
  125.         if(this != &v)//порівнюєм дві адреси
  126.         {
  127.             //cout<<"construkt copy: "<<endl;
  128.             n = v.n;
  129.             a =  new T[n];
  130.             for (int i = 0; i < v.n; i++)
  131.              {
  132.                 a[i] = v.a[i];
  133.              }
  134.         }
  135.     }
  136.  
  137.  
  138.     int main()
  139. {
  140.     Vector<int>* array  = new Vector<int>[3];
  141.  
  142.     for (int i = 0; i < 3; i++)
  143.     {
  144.         cin >> array[i];
  145.     }
  146.  
  147.     Vector <int> sum;
  148.     sum = array[0] + array[1] + array[2] ;
  149.     cout << "The sum of all 3 vectors is: " << sum << endl;
  150.  
  151.     system("PAUSE");
  152.     return 0;
  153. }
Success #stdin #stdout #stderr 0s 3236KB
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stdin
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1 2 3 4 5 6 7 8 9
stdout
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Vvedit vector rozmirom 3:
Vvedit vector rozmirom 3:
Vvedit vector rozmirom 3:
resultat: 5 7 9 

resultat: 12 15 18 

The sum of all 3 vectors is: 0 0 0
stderr
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sh: 1: PAUSE: not found
https://ideone.com/5aJxO0
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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