C program to allocate memory dynamically for 2-d array, C/C++ Programming

Assignment Help:

Aim: To implement a program to allocate memory dynamically for 2 dimensional array (accept and print matrix) using pointers.

Code:                      

#include

#include

class matrix

{

            int **p,r,c,i,j;

            public:

                        matrix(int,int);

                        ~matrix();

                        void getdata();

                        void display();

};

matrix::matrix(int x,int y)

{

            r=x;

            c=y;

            p=new int *[r];

            for(i=0;i

                        p[i]=new int [c];

}

matrix::~matrix()

{

            for(i=0;i

                        delete p[i];

            delete p;

            cout<<"\nMemory deallocated successfully\n";

}

void matrix::getdata()

{

            cout<<"\nEnter matrix values:\n";

            for(i=0;i

            {

                        cout<<"Enter values for row:"<

                        for(j=0;j

                                    cin>>p[i][j];

                        }

}

void matrix::display()

{

            cout<<"\nThe matrix is:\n";

            for(i=0;i

            {;

                        for(j=0;j

                                    cout<

                        cout<

            }

}

void main()

{

            int rows,cols;

            clrscr();

            cout<<"Enter number of rows and columns for a matrix\n";

            cout<<"Enter number of rows\n";

            cin>>rows;

            cout<<"Enter number of columns\n";

            cin>>cols;

            matrix A(rows,cols);

            A.getdata();

            A.display();

            getch();

}

Output:

Enter number of rows and columns for a matrix

Enter number of rows                                                           

3                                                                               

Enter number of columns                                                        

3                                                                              

Enter the values of the matrix                                                 

Enter values for row 1                                                         

1 2 3                                                                          

Enter values for row 2                                                         

4 5 6                                                                           

Enter values for row 3                                                         

7 8 9                                                                          

The matrix is                                                                   

1       2       3                                                              

4       5       6                                                              

7       8       9                                                               

Memory deallocated successfully


Related Discussions:- C program to allocate memory dynamically for 2-d array

Plz reply on [email protected], You are to implement a code cracking ...

You are to implement a code cracking system. The system will deploy four processes (p1,p2,p3 & p4) to try to guess the password of an encrypted code. For encryption, we consider th

Memory management operator, Memory Management Operator In C malloc( ), ...

Memory Management Operator In C malloc( ), calloc( ), realloc( ), and free( ) are used to mange dynamic memory.  In addition to these function C++ have derived two unary ope

Explain compound assignment operators, Compound Assignment Operators Ap...

Compound Assignment Operators Apart from the binary and the unary arithmetic operators, we also have compound assignment operators. These are +=, -=, *=, /=, %=. Using these op

Describe the theoretical concepts of binary files, Question 1 Explain the ...

Question 1 Explain the concept of constructors and destructors in C++ with programming examples Question 2 Explain the concepts and applications of multiple inheritance and v

What does it mean to declare a function as a static, (c) A static member fu...

(c) A static member function can access static member data only, static member functions and functions and data outside the class. A static member function may be called, even whil

Program to calculate gross pay and tax payable, Study the following table u...

Study the following table used to compute the tax payable by employees in certain organization   Gross Pay                                  Fewer than Three             Three

Prepare aime crossover alert expert adviso, Prepare aime crossover alert ex...

Prepare aime crossover alert expert adviso Project Description: Need to develop an expert advisor base on aime crossover alert indicator. Skills required is C Programming

Game, how to make a game

how to make a game

Facebook auto like system, I want a PROGRAM - Facebook auto like system to ...

I want a PROGRAM - Facebook auto like system to increase fans to different fanpage It has in a program that take Facebook mails and passwords from a excel file (.xlsx) for examp

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd