pointer problem.

[ozan]

Hi,
I am confused about pointer issue.

#include <iostream>
#include <limits>
using namespace std;
int main()
{
double *Pdb;
            Pdb = new double[2];
            Pdb[0] = 1;Pdb[1]=3;Pdb[2]= -8.8174;
            int tap_length = 3;
for(int i = 0; i <= (tap_length-1); i++)
        {
           cout<<Pdb[i]<<endl;
};
  std::cout <<"   Press ENTER to continue...";
  std::cin.ignore( std::numeric_limits<std::streamsize>::max(), '\n' );
return(0);

The code does not give any error but when I run the program Windows close the console and program.Why does this happen?

















/code]

[mordekai]

On line you declare
Pdb = new double[2];

but you probably mean
Pdb = new double[3];

In this meaning the square brackets don't count from zero on...

[ozan]

Thanks mordekai
but then why does not this program work(again no compiler error),only diffrence from previous program is 2 dimensional

#include <iostream>
#include <limits>
using namespace std;
int main()
{
double **PDB;


 PDB = new double*[2]; // if N is rows
for (int i = 0; i < 1; ++i )
{
   PDB[i] = new double[2];
};
    PDB[0][0] = 2;PDB[0][1]=3;PDB[1][0] = 5;
    PDB[1][1] = 7;

cout<<PDB[1][0]<<endl;

[mordekai]

It's the for loop:
for (int i = 0; i < 1; ++i )

has to be
for (int i = 0; i < 2; ++i )

[ozan]

Thanks mordekai