c++ - Template matrix with char* consol stop responding when using operator= -

i need help. first hugh program in c++ (pointers nightmare). tried , can't find did wrong.

    class aghmatrix { private:     t ** matrix;     int n;     int m; public:      aghmatrix() : n(0), m(0) {};      aghmatrix(int _n, int _m);      aghmatrix(const aghmatrix& other);      ~aghmatrix();       void setitem(int n, int m, t item);       void setitems (t * wsk);      void setitems(int r, int c ...);      void setall();      void getall();      bool couldbeadded(char * word, char sign);       bool equals (t first, t second);      t operator()(int a, int b);      aghmatrix<t> & operator+(const aghmatrix<t> & other);      aghmatrix<t> & operator*(const aghmatrix<t> & other);      aghmatrix<t> & operator= ( const aghmatrix<t> & other);      bool operator== (const aghmatrix<t> & other);      bool operator!= (const aghmatrix<t> & other); }; 

test :

char* cpt[] = {"to", "jest", "tablica", "wyrazow", "o", "rozmiarze", "jedenascie", "ktore", "beda", "elementami", "macierzy"}; aghmatrix<char*> cpm3(3, 1); aghmatrix<char*> cpm4; cpm3.setitems(cpt+3); cpm4 = cpm3; // here consol stop responding. 

constructors :

//default  aghmatrix() : n(0), m(0) {}; //with param template <class t> aghmatrix<t>::aghmatrix(int _n, int _m) {       n = _n;       m = _m;       matrix = new  t * [n];          (int = 0; < n; ++)         {             matrix[i] = new t[m];         } } 

setitems:

template <class t> void aghmatrix<t>::setitems (t * wsk) {         int licznik = 0;         for(int = 0; < n; ++)         {             (int j = 0; j < m; j ++)             {                 matrix[i][j] = wsk[licznik];                 licznik ++;             }         }  } 

operator= char*

template <> aghmatrix<char*> & aghmatrix<char*>::operator= ( const aghmatrix<char*> & other) {             if ( & other != this)      {           if ( (other.n == n) && (other.m == m) && (this->matrix != 0))     {              (int = 0; < n; ++)             {                     (int j = 0; j < m; j ++)                     {                         for(int ii = 0; ii < strlen(other.matrix[i][j]); ii++)                         {                         matrix[i][j][ii] = other.matrix[i][j][ii];                         }                     }             }       }      else      {           if(this->matrix)         {          (int = 0; < n; ++)         {             (int j = 0; j < m; j ++)             {                 delete [] matrix[i][j];             }              delete [] matrix[i];         }         delete [] matrix;         n = 0;         m = 0;         matrix = null;          }          n = other.n;         m = other.m;         matrix  = new char **[n];          for(int = 0; < n; ++)         {             matrix[i] = new char*[m];          }          for(int = 0; < n; ++)         {             for(int j = 0; j < m; j ++)             {                 matrix[i][j] = new char[strlen(other.matrix[i][j])];                 for(int ii = 0; ii < strlen(other.matrix[i][j]); ii ++)                 {                 matrix[i][j][ii] = other.matrix[i][j][ii];;                 }             }         }       }      }      return *this;         } 

i tried , still i'm getting problem console (it looks i'm using somewhere uninitialized memory or sth). cant solve problem alone alone can me?

eidt: 1 more thing : error shows when program comes end , after change destructor :

now looks :

template

aghmatrix<t>::~aghmatrix() {     if (matrix)     {     (int = 0; < n; ++)     {         delete [] matrix[i];     }         delete [] matrix;         matrix = null;;         n = 0;         m = 0;     }   } 

the previous version of destructor :

template <class t> aghmatrix<t>::~aghmatrix() {     if (matrix =! 0)     {     (int = 0; < n; ++)     {         delete [] matrix[i];     }         delete [] matrix;         matrix = 0;     }   } 

maybe here reason of error?

edit:--------------------- found reason of error here is: when create

aghmatrix<char*> cpm3(3, 1); cpm4 = cpm3; //destructor create problem 

but when this:

aghmatrix<char*>cpm3(3,2); //or somekind of other number '1' cpm4 = cpm3; // works fine 

any ideas?