Menu Driven Program for Matrices

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Menu Driven Program for Matrices in C and C++ Language:

In this article, I am going to discuss Menu Driven Program for Matrices in C and C++ Language with Examples. Please read our previous article, where we discussed Toeplitz Matrix in C Language with Examples.

Menu Driven Program for Matrices:

We will show for the only diagonal matrix but you can modify the program to create a menu program for other matrices. In our program, there will be 5 choices:

• Create Matrix
• Get Element
• Set Element
• Display Matrix
• Exit

Now, let see the code:

Menu Driven Program for Matrices Code in C Language:

#include <stdio.h>
#include <stdlib.h>

int main ()
{
    int n, ch, y, i, j;

    printf ("Enter Dimension of Matrix: ");
    scanf ("%d", &n);
    int *B = (int *) malloc (n * sizeof (int));

    do
    {
        printf ("\n1. Create Matrix\n");
        printf ("2. Get Matrix Element\n");
        printf ("3. Set Matrix Element\n");
        printf ("4. Display Matrix\n");
        printf ("0. Exit\n\n");

        printf ("Enter choice: ");
        scanf ("%d", &ch);

        switch (ch)
        {
          case 1:
             printf ("Enter non-zero elements of Diagonal Matrix:\n");
             for (int k = 0; k < n; k++)
             {
                 scanf ("%d", &B[k]);
             }
             break;

          case 2:
             printf ("Enter Indices: \n");
             scanf ("%d%d", &i, &j);
             if (i == j)
                 printf ("%d ", B[i - 1]);
             else
                 printf ("0 ");
             break;

          case 3:
             printf ("Enter row, column and element:\n");
             scanf ("%d%d%d", &i, &j, &y);
             if (i == j)
                 B[i - 1] = y;
             break;

          case 4:
             printf ("Matrix is: \n");
             for (int r = 0; r < n; r++)
             {
                 for (int c = 0; c < n; c++)
                 {
                   if (r == c)
                   {
                      printf ("%d ", B[r]);
                   }
                   else
                   {
                      printf ("0 ");
                   }
                 }
                 printf ("\n");
             }
             break;

             printf ("Enter choice: ");
             scanf ("%d", &ch);
       }
    }
    while (ch > 0);

    getchar ();
}

Output:

Menu Driven Program for Matrices Using Functions:

In our program, there will be 5 choices:

• Create Matrix
• Get Element
• Set Element
• Display Matrix
• Exit

Now, let see the code:

Menu Driven Program for Matrices Using Functions Code in C Language:

#include <stdio.h>
#include <stdlib.h>

int* CreateMatrix (int *B, int n)
{
    printf ("Enter non-zero elements of Diagonal Matrix:\n");
    for (int k = 0; k < n; k++)
    {
        scanf ("%d", &B[k]);
    }
}

void SetElement (int *B, int y, int i, int j)
{
    if (i == j)
        B[i - 1] = y;
}

void GetElement (int *B, int i, int j)
{
    if (i == j)
        printf ("%d ", B[i - 1]);
    else
        printf ("0 ");
}

void DisplayMatrix (int *B, int n)
{
    printf ("Matrix is: \n");
    for (int r = 0; r < n; r++)
    {
       for (int c = 0; c < n; c++)
       {
         if (r == c)
         {
             printf ("%d ", B[r]);
         }
         else
         {
             printf ("0 ");
         }
       }
       printf ("\n");
    }
}

int main ()
{
    int n, ch, y, i, j;

    printf ("Enter Dimension of Matrix: ");
    scanf ("%d", &n);
    int *B = (int *) malloc (n * sizeof (int));

    do
    {
        printf ("\n1. Create Matrix\n");
        printf ("2. Get Matrix Element\n");
        printf ("3. Set Matrix Element\n");
        printf ("4. Display Matrix\n");
        printf ("0. Exit\n\n");

        printf ("Enter choice: ");
        scanf ("%d", &ch);

        switch (ch)
        {
         case 1:
             CreateMatrix (B, n);
             break;

        	case 2:
        	    printf ("Enter Indices: \n");
        	    scanf ("%d%d", &i, &j);
        	    GetElement (B, i, j);
        	    break;

        	case 3:
        	    printf ("Enter row, column and element:\n");
        	    scanf ("%d%d%d", &i, &j, &y);
        	    SetElement (B, y, i, j);
        	    break;
        
        	case 4:
        	    DisplayMatrix (B, n);
        	    break;
        
        	printf ("Enter choice: ");
        	scanf ("%d", &ch);
        }
    }
    while (ch > 0);
    getchar ();
}

Output:

Menu Driven Program for Matrices Using Class in C++:

In our program, there will be 5 choices:

• Create Matrix
• Get Element
• Set Element
• Display Matrix
• Exit

Now, let see the code:

Menu Driven Program for Matrices Code in C++ Language:

#include <iostream>
#include <conio.h>
using namespace std;

class Diagonal
{
    private:
        int *B, n;
    public:
        Diagonal (int n);
        void Create ();
        void Get (int i, int j);
        void Set (int i, int j, int y);
        void Display ();
        ~Diagonal ();
};

Diagonal::Diagonal (int n)
{
    this->n = n;
    B = new int[this->n];
}

void Diagonal::Create ()
{
    cout << "Enter non-zero elements of Diagonal Matrix:\n";
    for (int k = 0; k < n; k++)
    {
        cin >> B[k];
    }
}

void Diagonal::Get (int i, int j)
{
    if (i == j)
        cout << "%d " << B[i - 1];
    else
        cout << "0 ";
}

void Diagonal::Set (int i, int j, int y)
{
    if (i == j)
        B[i - 1] = y;
}

void Diagonal::Display ()
{
    cout << "Matrix is: \n";
    for (int r = 0; r < n; r++)
    {
       for (int c = 0; c < n; c++)
       {
         if (r == c)
         {
             cout << B[r] << " ";
         }
         else
         {
             cout << "0 ";
         }
       }
       cout << "\n";
    }
}

Diagonal::~Diagonal ()
{
    delete[]B;
}

int main ()
{
    int n, ch, y, i, j;

    cout << "Enter Dimension of Matrix: ";
    cin >> n;
    Diagonal dm (n);

    do
    {
        cout << "\n1. Create Matrix\n";
        cout << "2. Get Matrix Element\n";
        cout << "3. Set Matrix Element\n";
        cout << "4. Display Matrix\n";
        cout << "0. Exit\n\n";

        cout << "Enter choice: ";
        cin >> ch;

        switch (ch)
        {
            case 1:
              dm.Create ();
              break;

        	case 2:
        	    cout << "Enter Indices: \n";
        	    cin >> i >> j;
        	    dm.Get (i, j);
        	    break;
        
        	case 3:
        	    cout << "Enter row, column and element:\n";
        	    cin >> i >> j >> y;
        	    dm.Set (i, j, y);
        	    break;

        	case 4:
        	    dm.Display ();
        	    break;

            cout << "Enter choice: ";
            cin >> ch;
        }
    }
    while (ch > 0);
    getchar ();
}

Output:

Here, in this article, I try to explain Menu Driven Program for Matrices in C and C++ Language with Examples and I hope you enjoy this Menu Driven Program for Matrices in C and C++ Language with Examples article.