Can this be done for 3 dimensions and more

Expand Post »

Can similar code be written for 3 dimensions:

C++ Syntax (Toggle Plain Text)
#include <exception>
#include <iostream>
using std::cin;
using std::cout;
using std::endl;
void display(long double **);
void de_allocate(long double **);
 
int m = 3;                               // ROWS.
int n = 5;                               // COLUMNS.
 
int main(void) {
   long double **data;
 
   try {                                 // EXCEPTIONS.
      data = new long double*[m];        //THE ROWS.
      for (int j = 0; j < m; j++)
 
          data[j] = new long double[n];  //THE COLUMNS
      }
 
   catch (std::bad_alloc) {  
 
      cout << "Could not allocate. Bye ...";
      cin >>"";
      }
 
   for (int i = 0; i < m; i++)
      for (int j = 0; j < n; j++)
          data[i][j] = i + j;            
 
   display(data);
   de_allocate(data);
   return 0;
 
   }
 
void display(long double **data) {
   for (int i = 0; i < m; i++) {
        for (int j = 0; j < n; j++)
             cout << data[i][j] << " ";
       cout << "\n" << endl;
       }
       cout <<"Input any character to quit then press [ENTER]"<<endl;
       cin >>" ";
   }
 
void de_allocate(long double **data) {
   for (int i = 0; i < m;  i++)
       delete[] data[i];                 // DELETE THE COLUMNS
 
   delete[] data;                        // DELETE THE ROWS
 
   }
#include <exception>
#include <iostream>
using std::cin;
using std::cout;
using std::endl;
void display(long double **);
void de_allocate(long double **);

int m = 3;                               // ROWS.
int n = 5;                               // COLUMNS.

int main(void) {
   long double **data;

   try {                                 // EXCEPTIONS.
      data = new long double*[m];        //THE ROWS.
      for (int j = 0; j < m; j++)

          data[j] = new long double[n];  //THE COLUMNS
      }

   catch (std::bad_alloc) {  
      
      cout << "Could not allocate. Bye ...";
      cin >>"";
      }

   for (int i = 0; i < m; i++)
      for (int j = 0; j < n; j++)
          data[i][j] = i + j;            

   display(data);
   de_allocate(data);
   return 0;

   }

void display(long double **data) {
   for (int i = 0; i < m; i++) {
        for (int j = 0; j < n; j++)
             cout << data[i][j] << " ";
       cout << "\n" << endl;
       }
       cout <<"Input any character to quit then press [ENTER]"<<endl;
       cin >>" ";
   }

void de_allocate(long double **data) {
   for (int i = 0; i < m;  i++)
       delete[] data[i];                 // DELETE THE COLUMNS

   delete[] data;                        // DELETE THE ROWS

   }

I am working on trying to get it to work for 3 dimensions + but I would like to see how others implement this.
Thanks yet again.

Similar Threads

Vector Dimensions in C++
Element. Dimensions.js -- i m getting problem in JavaScript / DHTML / AJAX
Find the dimensions of a button in C++
How to put the random integer between 1-100 into the 2 dimensions array (5x5 metrix) in C++
module to get video file dimensions in Python

TJW

Reputation Points: 11

Solved Threads: 0

Newbie Poster

Offline

12 posts
since May 2004

Permalink

Jun 1st, 2004

Re: Can this be done for 3 dimensions and more

>I am working on trying to get it to work for 3 dimensions + but I would like to see how others implement this.

Just keep following the pattern.

(Toggle Plain Text)

#include <iostream>
 
void foo(std::size_t x, std::size_t y, std::size_t z)
{
   int q = 0, ***array;
   // Create and initialize dynamic 3-D "array"
   array = new int**[x];
   for ( std::size_t i = 0; i < x; ++i )
   {
	  array[i] = new int *[y];
	  for ( std::size_t j = 0; j < y; ++j )
	  {
		 array[i][j] = new int[z];
		 for ( std::size_t k = 0; k < z; ++k )
		 {
			array[i][j][k] = ++q; // initialize with something
		 }
	  }
   }

   // Show elements
   for ( std::size_t i = 0; i < x; ++i )
   {
	  for ( std::size_t j = 0; j < y; ++j )
	  {
		 for ( std::size_t k = 0; k < z; ++k )
		 {
			std::cout << "array[" << i << "][" << j << "][" << k
					  << "] = " << array[i][j][k] << std::endl;
		 }
	  }
   }

   // Free memory
   for ( std::size_t i = 0; i < x; ++i )
   {
	  for ( std::size_t j = 0; j < y; ++j )
	  {
		 delete[] array[i][j];
	  }
	  delete[] array[i];
   }
   delete[] array;
}
 
int main()
{
   foo(2,3,4);
   return 0;
}
/* my output
array[0][0][0] = 1
array[0][0][1] = 2
array[0][0][2] = 3
array[0][0][3] = 4
array[0][1][0] = 5
array[0][1][1] = 6
array[0][1][2] = 7
array[0][1][3] = 8
array[0][2][0] = 9
array[0][2][1] = 10
array[0][2][2] = 11
array[0][2][3] = 12
array[1][0][0] = 13
array[1][0][1] = 14
array[1][0][2] = 15
array[1][0][3] = 16
array[1][1][0] = 17
array[1][1][1] = 18
array[1][1][2] = 19
array[1][1][3] = 20
array[1][2][0] = 21
array[1][2][1] = 22
array[1][2][2] = 23
array[1][2][3] = 24
*/

Dave Sinkula

Team Colleague

Reputation Points: 2780

Solved Threads: 312

long time no c

Offline

4,790 posts
since Apr 2004

Permalink

Jun 1st, 2004

Re: Can this be done for 3 dimensions and more

Thanks--> that is what I thought as this is what I tried:

C++ Syntax (Toggle Plain Text)
#include <iostream>
using namespace std;
 
int scan = 10;
int xyz=3;
int pixels=512;
 
int main()
{
   int ***array;
   array=new int **[scan];
 
   for (int i=0; i<scan;i++)
   {
        array[i]=new int*[xyz];
        for(int j=0; j<xyz;j++)
        {
                array[i][j]=new int[pixels];
        }
   }
#include <iostream>
using namespace std;

int scan = 10;
int xyz=3;
int pixels=512;

int main()
{
   int ***array;
   array=new int **[scan];

   for (int i=0; i<scan;i++)
   {
        array[i]=new int*[xyz];
        for(int j=0; j<xyz;j++)
        {
                array[i][j]=new int[pixels];
        }
   }

I wanted: array[scan][xyz][pixels] ie array[10][3]512]

TJW

Reputation Points: 11

Solved Threads: 0

Newbie Poster

Offline

12 posts
since May 2004

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in C++ Forum Timeline: Bloodshed C++ IDE

Next Thread in C++ Forum Timeline: a program about fractions

DaniWeb Message

Cancel Changes

User Name
Password