2D Array

Newsgroup: comp.lang.c++

Subject: 2D Array

From: axcytz@...

Date: Fri, 28 Jun 2013 10:59:46 -0700 (PDT)



Hello all,



I have the following code to have a 2D array, and my aim is to have a matrix whose (1) column size is variable(i.e. 1st row has size 3, 2nd has 2, 3rd has 5, and so on);(2) row size is dynamically changed (I want to be able to add new rows in the future.) Unfortunately, I can't achieve these goals. Thanks for your helps in advance!



#include <string>

#include <iostream>

#include <fstream>

#include <stdio.h>



using namespace std;



int main()

{



int rowSize = 3, columnSize = 5, z=0, counter = 0;

int **array;

array = new int* [rowSize];



for (int i = 0; i < rowSize; i++)

array[i] = new int [columnSize]; // rowSize* columnSize matrix is created





int* addedRow;

addedRow = new int [rowSize]; //to add new rows







for (int z = 0; z < counter; z++ ){ //z is the index of new row

array[rowSize+z] = new int [size[z]];} //to add new row

counter++; // count the added rows

cout << "added row's number of elements:\n";

cin >> addedRow[z];



for (int i = 0; i < addedRow[z]; i++ ){

array[z][i] = 1; //all elements are set to 1

}





for(int i=0; i<rowSize; i++)

{

for(int j=0; j<n; j++)

{

cout << array[i][j] << " ";

}

cout << endl;

}



for (int i = 0; i < rowSize; i++){

delete [] array[i];

}

delete [] array;



}

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