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  1. #include <iostream>
  2. #include <iomanip>
  3. #include <cmath>
  4. using namespace std;
  5.  
  6. class Matrix
  7.   {
  8.    private:
  9.    size_t Y,X;
  10.    int *T;
  11.    protected:
  12.    int width()const;
  13.    public:
  14.    Matrix():Y(0),X(0),T(0) {}
  15.    Matrix(size_t Y,size_t X,int V=0):Y(Y),X(X)
  16.      {
  17.       size_t S=X*Y;
  18.       T=new int[S];
  19.       for(size_t i=0;i<S;++i) T[i]=V;
  20.      }
  21.    size_t Rows()const { return Y; }
  22.    size_t Cols()const { return X; }
  23.    ostream &out(ostream &s)const;
  24.    istream &inp(istream &s);
  25.    const int *operator[](size_t y)const { return T+y*X; }
  26.    int *operator[](size_t y) { return T+y*X; }
  27.   };
  28. inline ostream &operator<<(ostream &s,const Matrix &m) { return m.out(s); }
  29. inline istream &operator>>(istream &s,Matrix &m) { return m.inp(s); }
  30.  
  31. int Matrix::width()const
  32.   {
  33.    size_t S=Y*X;
  34.    if(S<=0) return 1;
  35.    int min=T[0],max=min;
  36.    for(size_t i=1;i<S;++i) if(min>T[i]) min=T[i]; else if(max<T[i]) max=T[i];
  37.    max=log10(abs(max))+(max<0)+1;
  38.    min=log10(abs(min))+(min<0)+1;
  39.    return min>max?min:max;
  40.   }
  41.  
  42. ostream &Matrix::out(ostream &s)const
  43.   {
  44.    size_t S=Y*X;
  45.    int w=1+width();
  46.    for(size_t y=0,i=0;y<Y;++y,s<<endl)
  47.      {
  48.       for(size_t x=0;x<X;++x,++i)
  49.         {
  50.          if(&s==&cout) s<<setw(w-!x);
  51.          s<<T[i];
  52.          if(&s!=&cout) s<<'\t';
  53.         }
  54.      }
  55.    return s;
  56.   }
  57.  
  58. istream &Matrix::inp(istream &s)
  59.   {
  60.    size_t S=Y*X;
  61.    for(size_t y=0,i=0;y<S;y+=X)
  62.      {
  63.       for(size_t x=0;x<X;++x,++i)
  64.         {
  65.          if(&s==&cin) cout<<"Matrix["<<y<<"]["<<x<<"]= ";
  66.          s>>T[i];
  67.         }
  68.      }
  69.    return s;
  70.   }
  71.  
  72. int main()
  73.   {
  74.    Matrix m(2,2);
  75.    cout<<"Podaj macierz:"<<endl;
  76.    cin>>m;
  77.    cout<<endl<<m<<endl;
  78.    for(size_t y=0;y<m.Rows();++y) for(size_t x=0;x<m.Rows();++x) m[y][x]=(y+2)*(x+3);
  79.    cout<<endl<<m<<endl;
  80.    for(size_t y=0;y<m.Rows();++y) for(size_t x=0;x<m.Rows();++x) m[y][x]=(y-5)*(x+7);
  81.    cout<<endl<<m<<endl;
  82.    return 0;
  83.   }
Success #stdin #stdout 0s 3036KB
comments (?)
stdin
copy 
-77777
2
5
-999
stdout
copy 
Podaj macierz:
Matrix[0][0]= Matrix[0][1]= Matrix[2][0]= Matrix[2][1]= 
-77777      2
     5   -999


 6  8
 9 12


-35 -40
-28 -32
https://ideone.com/6fbisj
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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