Segmentation Fault (Core Dumped) C++ - Pointers -

i'm pretty new pointers , i'm assigned array doubling task whenever run code segmentation fault(core dumped) error. can @ code , tell me error coming , can fix it?

i'm stuck , appreciated.

code:

                   int size = length;                    string *new_array = null;                    string *tmp_array = new string[50];                    for(int k=0; k<50; k++)//initial array copying.                        tmp_array[k] = wordarray[k];                     for(int i=0; i<=1; i++)//array range 0 n-1                    {                       new_array = new string[size*2];                       for(int j=0; j<size; j++)//array range 0 n-1                       {                          new_array[j]=tmp_array[j];                          new_array[j+size]="empty";                       }                       delete[] tmp_array; //deleting old array                       size=size*2;                    }                   delete[] tmp_array;// free memory                   cout<<new_array[x]<<endl; 

there error somewhere in there. there no other pointer reference in of code.

thanks

the problem trying access tmp_array after it's been deleted.

for(int i=0; i<=1; i++)//array range 0 n-1 {    new_array = new string[size*2];    for(int j=0; j<size; j++)//array range 0 n-1    {       new_array[j]=tmp_array[j];       new_array[j+size]="empty";    }     // deleted tmp_array used in next iteration of loop,    delete[] tmp_array; //deleting old array     //===============================    // add fix problem    //===============================    tmp_array = new_array;     size=size*2;  }