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  1. #include <iostream>
  2. #include <vector>
  3. #include <cassert>
  4. using namespace std;
  5. template<typename T,int Roz>
  6. class Matrix
  7. {
  8. public:
  9.     T tab[Roz][Roz];
  10.     int z;
  11.     Matrix()
  12.     {
  13.         z=Roz;
  14.         for(int i=0;i<Roz;++i)
  15.            for(int j=0;j<Roz;++j)
  16.               tab[i][j]=0;
  17.     }
  18.     T& operator()(int x,int y){
  19.         return tab[x-1][y-1];
  20.     }
  21.  
  22.     template <typename T2, int W>
  23.     Matrix operator+(const Matrix<T2,W>& b)
  24.     {
  25.         assert(b.z == Roz && this->z == Roz);
  26.         Matrix<T2,Roz> tmp;
  27.         for(int i=0;i<Roz;++i)
  28.            for(int j=0;j<Roz;++j)
  29.               tmp.tab[i][j]=this->tab[i][j]+b.tab[i][j];
  30.         return tmp;
  31.     }
  32.  
  33.     template <typename T2, int W>
  34.     Matrix& operator=(const Matrix<T2,W>& b)
  35.     {
  36.         if(&b != this) {
  37.            assert(Roz == W);
  38.  
  39.            for(int i=0;i<Roz;++i)
  40.               for(int j=0;j<Roz;++j)
  41.                   this->tab[i][j] = b.tab[i][j];
  42.         }
  43.         return *this;
  44.     }
  45.  
  46.     Matrix& operator*(Matrix<T,Roz> b)
  47.     {
  48.          Matrix<T,Roz> tmp;
  49.          for(int i=0;i<Roz;++i)
  50.              for(int j=0;j<Roz;++j)
  51.                 tmp.tab[i][j]=this->tab[i][j]+b.tab[i][j]; 
  52.     }
  53.  
  54.     friend ostream& operator<<(ostream& out, Matrix<T,Roz> &v)
  55.     {
  56.          for(int i=0;i<v.z;++i)
  57.          {
  58.              for(int j=0;j<v.z;++j)
  59.                 out<<v.tab[i][j]<<" ";
  60.              out<<endl;
  61.           }
  62.           return out;
  63.     }
  64. };
  65.  
  66.  
  67. template<class T>
  68. class Matrix<T,0>
  69. {
  70. private:
  71.      Matrix()
  72.     {
  73.         z=0;
  74.     }
  75. public:
  76.     vector<vector<T> > tab;
  77.     int z;
  78.  
  79.     Matrix(int z)
  80.     {
  81.         z = z;
  82.         for(int i=0;i<z;++i)
  83.             tab.push_back(vector<T>(z));
  84.         this->z = z;
  85.         for(int i=0;i<z;++i)
  86.                 for(int j=0;j<z;++j)
  87.                     tab[i][j]=0;
  88.     }
  89.     T& operator()(int x,int y){
  90.         return tab[x-1][y-1];
  91.     }
  92.  
  93.     Matrix& operator+(Matrix<T,0> b)
  94.     {
  95.             Matrix<T,0> tmp(b.z);
  96.             for(int i=0;i<z;++i)
  97.                 for(int j=0;j<z;++j)
  98.                     tmp.tab[i][j]=this->tab[i][j]+b.tab[i][j];
  99.  
  100.  
  101.     }
  102.  
  103.      Matrix& operator+(Matrix<T,0> &b)
  104.     {
  105.             Matrix<T,0> tmp(b.z);
  106.             for(int i=0;i<z;++i)
  107.                 for(int j=0;j<z;++j)
  108.                     tmp.tab[i][j]=this->tab[i][j]+b.tab[i][j];
  109.  
  110.     }
  111.  
  112.  
  113.  
  114.     friend ostream& operator<<(ostream& out, Matrix<T,0> &v)
  115.     {
  116.  
  117.             for(int i=0;i<v.z;++i)
  118.                 {
  119.                     for(int j=0;j<v.z;++j)
  120.                         out<<v.tab[i][j]<<" ";
  121.  
  122.                     out<<endl;
  123.                 }
  124.             return out;
  125.     }
  126. };
  127.  
  128.  
  129. int main()
  130. {
  131.     Matrix<int,3> A;
  132.     Matrix<int, 0> Z(3);
  133.     Matrix<int, 3> Y;
  134.     A(1,1)=1;
  135.     Z(1,1)=1;
  136.     std::cout << A << std::endl;
  137.     std::cout << Z << std::endl;
  138.     std::cout << Y << std::endl;
  139.  
  140.     Y = A + Z;
  141.     std::cout << Y << std::endl;
  142.     return 0;
  143. }
Success #stdin #stdout 0s 2988KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1 0 0 
0 0 0 
0 0 0 

1 0 0 
0 0 0 
0 0 0 

0 0 0 
0 0 0 
0 0 0 

2 0 0 
0 0 0 
0 0 0
https://ideone.com/d7rEBN
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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