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

C prg, main() { int a[5]={1,3,6,7,0}; int *b; b=&a[2]; } The value of b[-1]...

main() { int a[5]={1,3,6,7,0}; int *b; b=&a[2]; } The value of b[-1] is

Palindrome, A palindrome is a string that reads the same from both the ends...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

Derived data type, Derived Data Type: Array is derived data type to sto...

Derived Data Type: Array is derived data type to store large collection of data of only one data type. int mark[100]; char names[25]; Function: will be discussed early

Sentence, Consider text comprised of sentences and sentences comprised of w...

Consider text comprised of sentences and sentences comprised of words. Words in a sentence will be space delimited. Given a text and K strings, task is to find out the number valid

Bouncing Ball, Create an applet that bounces a blue ball inside an applet u...

Create an applet that bounces a blue ball inside an applet using Thread. The ball (diameter is 10) will start at position (0,0). When the ball hits the edge of the applet, the ba

Prime no., program to find if a no . is prime or not

program to find if a no . is prime or not

Stack, Implement multiple stacks in a single dimensional array. Write algor...

Implement multiple stacks in a single dimensional array. Write algorithms for various stack operations for them.

Prime, Prepare a program to obtain prime factors of any integer number usin...

Prepare a program to obtain prime factors of any integer number using functions

Program for greatest common divisor – c++ program, Greatest Common Divisor ...

Greatest Common Divisor (GCD) - The greatest common divisor (GCD) of two integers is the largest integer that will evenly divide both integers. The GCD algorithm involves intege

C , why c is middle level language?

why c is middle level language?

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