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 program for total & average in the array , C Program for TOTAL  & AVERA...

C Program for TOTAL  & AVERAGE IN THE ARRAY  #include stdio.h> #include conio.h> #include string.h> void main() {           int i=0,n[100],limit=0,a=0;

Explain call by reference, Call by Reference Passing variables(paramete...

Call by Reference Passing variables(parameters) to a function in C can be done in two ways - pass by value, also called as call by value and pass by address or also known as ca

Define the system oriented data files, Define the System Oriented Data File...

Define the System Oriented Data Files? System-oriented data files are further closely related to the computer's operating system than Stream- oriented data files and they are s

Area of curve, Write a program to find the area under the curve y = f(x) be...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Write a program that predicts users age, Write a program that predicts user...

Write a program that predicts users age: Write a program that predicts users' age (0-128 years old) with at most 7 questions. The game starts with asking the user whether he/s

Destructor, Destructor: The purpose of destructor is to free the memory...

Destructor: The purpose of destructor is to free the memory when the compiler memory is reduced or not enough to execute certain program. Sometimes there may several objects op

Pointer, solution of problem based on poiter

solution of problem based on poiter

C program to calculate area of cube, Aim: To implement program to calculat...

Aim: To implement program to calculate area of cube using inline function. Code: inline void area_cube(float side) {             float area;             are

Explain nested classes, Nested Classes Many a times, it becomes essenti...

Nested Classes Many a times, it becomes essential to have a class contain properties of two other classes. One way is to explain a class within another - that is a class with m

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