Divide Error Exception

[vsen123]

hi
I got this error: "Divide-error Exception 0x3D27:0x14D3 Resumable Processor Fault" in Turbo C++ 4.5(Win 16) in a program that uses multi-level Inheritance.
The problem occurs when I try to create an object of the last derived class(found out using trace).All the derived classes are derived using public visibility mode.
Code snippet:

class Finale:public R_mov
{  int PC2[8][6],Key_t[56],t_cnt;
    protected:
    int Key_final[16][48];
    public:
    Finale();
    void Lk_up_pc2();
    void display();
    ~Finale(){}
};
Finale::Finale()
{  int in;
    ifstream fin;
    fin.open("PC2.DAT");
    for(int i=1;i<=8;i++)
    {  for(int j=1;j<=6;j++)
        {  fin>>in;
            PC2[i][j]=in;
        }
    }
    fin.close();
}
void Finale::Lk_up_pc2()
{ for(int i=1;i<=16;i++)
  {  for(int j=1;j<3;j++)
      {  t_cnt=1;
          for(int k=1;k<=28;k++)
          {  if(j==1)
                 Key_t[t_cnt]=cn[i][k];
              else
                 Key_t[t_cnt]=dn[i][k];
              t_cnt++;
          }
      }
      t_cnt=1;
      for(j=1;j<=8;j++)
      {  for(int k=1;k<=6;k++)
          {  Key_final[i][t_cnt]=Key_t[PC2[j][k]];
              t_cnt++;
          }
      }
  }
}
void Finale::display()
{  for(int i=1;i<=16;i++)
    {  cout<<"\n\nKey["<<i<<"]:";
        for(int j=1;j<=48;j++)
            cout<<Key_final[i][j];
        cout<<endl;
        getch();
    }
    getch();
}
 

The error occurs in main() at the line where I declare an object of type Finale.
Any suggestions?

[Banfa]

You have your array indexes wrong

You declare the array

int PC2[8][6];

that means that valid values for the first index are in the range 0 - 7 inclusive and valid values for the second index are in the range 0 - 5 inclusive. C programmers start counting at 0.

In the constructor you have

for(int i=1;i<=8;i++)
{
    for(int j=1;j<=6;j++)
    {
        fin>>in ;
        PC2[i][j]=in;
    }
}

Your loops run in the range 1 - 8 and 1 - 6, this falls outside the valid range for the array indexes and accessing these invalid indexes is likely to cause some sort of memory corruption.