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

Intro to C++ Lab Help, I have a very confusing assignment and I''m struggli...

I have a very confusing assignment and I''m struggling to find the right place to begin or how to break the problem down.

Program in rpeanut that fills the graphics display, Write a program that co...

Write a program that counts from 0 to 99 and prints these numbers to the terminal ie it prints 00, 01, 02, 03, 04, 05, ....,99. Graphics 1. Write a program in rPeANUt that

Random searching, write aprogram for random -search to implement if a[i]=x;...

write aprogram for random -search to implement if a[i]=x;then terminate other wise continue the search by picking new randon inex into a

C, minimum total number of shelves.

minimum total number of shelves.

Explain about the floating point constants in c language, Explain about the...

Explain about the Floating point Constants in c language? A floating point constant is the number that contains either a fraction or decimal part. If an exponent is present its

Member dereferencing operators, M em b e r d e r e f e r e n c ...

M em b e r d e r e f e r e n c i ng o p e r a t o r s: T h e s e op e r a t o r s w i l l b e d i s c u s s e d l a t

Iteration problem, my program does not run more than 9 iterations when ever...

my program does not run more than 9 iterations when ever i want to iterate more than 100 iterations. what is the reason and how to tackle?

For loop, write a c++ program for the sum of 10 numbers and print out the a...

write a c++ program for the sum of 10 numbers and print out the average

Fibonacci series, draw the flow chart to print the fibonacci series upto n ...

draw the flow chart to print the fibonacci series upto n th terms

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