2D array (use Data.txt) **very important

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main(){

    int row  = 0;
    int col = 0;

    fstream myFile("Data.txt", ios::in);
    myFile >> row >> col;
    cout << "ROW: " << row << ", COL: " << col << endl;


    //int *pArr= new int [row];//1D array
    //delete[] pArr;

    //2D array
    int **ppArr = new int *[row]; // pointer-to-pointer
    for (int i = 0 ; i< row; i++)
        ppArr[i] = new int[col];


    //Read matrix from file
    for (int i=0; i< row;i++){
        for(int j =0; j<col;j++)
        {
            myFile >> ppArr[i][j];
        }
    }

    //display
    for (int i = 0; i < row; i++){
        for(int j = 0; j < col; j++)
        {
            cout << ppArr[i][j] <<"\t";
        }
        cout <<endl;
    }
    myFile.close();


    for (int i = 0; i< row;i++)
        delete[] ppArr[i];
    delete[] ppArr;

    return 0;
}