C++ Builder, StringGrid and table

My file with date - "date.h"

#include <iostream>
#define size 10
using namespace std;
int **main_tab;

int **tab_temp2;
int **tab_temp3;



void initialization_Tab()
{
 int i;
 //use in functions FormCreate
 main_tab=new int *[size];

 tab_temp2=new int *[size];
 tab_temp3=new int *[size];


 for(i=0;i<size;i++)
 {
  main_tab[i]=new int[size];

  tab_temp2[i]=new int[size];
  tab_temp3[i]=new int[size];

 }
}

void deleyted_Tab()
{
 //use in function click button Close
 int i;
 for(i=0;i<size;i++)
 {
  delete [] main_tab[i];
  delete tab_temp2[i];
  delete tab_temp3[i];

 }
 delete [] *main_tab;
 delete [] *tab_temp2;
 delete [] *tab_temp3;

}

My functions and libraries:

#include <vcl.h>
#include <stdlib.h>
#include <time.h>
#include <time.h>

#include "date.h"

void __fastcall TForm1::init_Random()
{
 srand(time(NULL));
}
AnsiString __fastcall TForm1:: char_for_Value(int x)
{
 if(x>0 && x<3)
  return "A";
 else if(x>2 && x<5)
  return "B";
 else if(x>4 && x<7)
  return "C";
 else if(x>6 && x<9)
  return "D";
 else return "E";


}

My form in C++ Builder:

Code: 
void __fastcall TForm1::Button1Click(TObject *Sender)
{
  int i,j;
  for(i=0;i<size;i++)
  {
   for(j=0;j<size;j++)
   {
    main_tab[i][j]=rand()%10+1;
    StringGrid1->Cells[i][j]=IntToStr(main_tab[i][j]);
    if(main_tab[i][j]%2==0)
     tab_temp2[i][j]=0;
    else
     tab_temp2[i][j]=1;
    StringGrid2->Cells[i][j]=IntToStr(tab_temp2[i][j]);
   }
  }
  for(i=0;i<size;i++)
  {
   for(j=0;j<size;j++)
   {
    tab_temp3[i][j]=main_tab[i][j];
    if(i-1>0)
     tab_temp3[i][j]+=main_tab[i-1][j];
    if((i-1)>0 && (j-1)>0)
     tab_temp3[i][j]+=main_tab[i-1][j-1];
    if(j-1>0)
     tab_temp3[i][j]+=main_tab[i][j-1];
    if((i+1)<size && (j-1)>0)
     tab_temp3[i][j]+=main_tab[i+1][j-1];
    if(i+1<size)
     tab_temp3[i][j]+=main_tab[i+1][j];
    if((i+1)<size && (j+1)<size)
     tab_temp3[i][j]+=main_tab[i+1][j+1];
    if(j+1<size)
     tab_temp3[i][j]+=main_tab[i][j+1];
    if((i-1)>0 && (j+1)<size)
     tab_temp3[i][j]+=main_tab[i-1][j+1];
    StringGrid3->Cells[i][j]=IntToStr(tab_temp3[i][j]);
    StringGrid4->Cells[i][j]=char_for_Value(main_tab[i][j]);
   }
  }


}
And program running: