49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
#include <iostream>
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using namespace std;
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#include "twoDArrays.h"
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/** Create a 2D dynamic array and return it.
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Use indexes in creation*/
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int** create2DArray1(int rows, int columns) {
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int** pp = new int*[rows];
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for (int i = 0; i < rows; ++i) {
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pp[i] = new int[columns];
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}
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return pp;
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}
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/** Create a 2D dynamic array and return it.
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Use offset in creation*/
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int** create2DArray2(int rows, int columns) {
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int** pp = new int*[rows];
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for (int i = 0; i < rows; ++i) {
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(**pp + i) = new int[columns];
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}
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return pp;
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}
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/* Populate the 2D array with arbitrary integers using a loop*/
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void populate (int** pp, int rows, int columns) {
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for (int i = 0; i < rows; ++i) {
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for (int j = 0; j < columns; ++j) {
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pp[i][j] = (i + 1) * j;
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}
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}
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}
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/*Traverse the 2D array using indexes inside a loop*/
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void traverse(int** pp, int rows, int columns) {
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for(int i = 0; i < rows; ++i) {
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for (int j = 0; j < columns; ++j) {
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cout << pp[i][j] << " ";
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cout << endl;
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}
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}
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/*Traverse the 2D array by de-referencing the pointers inside a loop*/
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void traverse1( int** pp, int rows, int columns);
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/** Free the memory the 2D array*/
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void freeMemory( int** pp, int rows);
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} |