explaination.md

Question [7]

Write a menu driven program to perform following operations:
a. Perform addition of two 3X3 matrices.
b. Obtain transpose of a given 3X3 matrix.
c. Multiplication of two 3X3 matrices.

Algorithm

1. Start the program
2. Accept Users choice
3. Accept Matrix(or multiple)
4. Perform required operations
5. Print the result
6. End the program

Code

#include <stdio.h>
int main()
{
    int matrix_1[3][3], matrix_2[3][3], finalMatrix[3][3], ch;
    printf("Enter your choice:  \n");
    printf("1. Add  \n");
    printf("2. Transpose:  \n");
    printf("3. Multiply  \n");
    scanf("%d", &ch);

    switch (ch)
    {
    case 1:
    {
        printf("\nEnter Contents of First matrix: \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("A[%d][%d]: ", i + 1, j + 1);
                scanf("%d", &matrix_1[i][j]);
            }
            printf("\n");
        }

        printf("Matrix 1: \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("%d ", matrix_1[i][j]);
            }
            printf("\n");
        }
        printf("\n");

        printf("Enter Contents of Second matrix: \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("B[%d][%d]: ", i + 1, j + 1);
                scanf("%d", &matrix_2[i][j]);
            }
            printf("\n");
        }

        printf("Matrix 2: \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("%d ", matrix_2[i][j]);
            }
            printf("\n");
        }
        printf("\n");

        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                finalMatrix[i][j] = matrix_1[i][j] + matrix_2[i][j];
            }
        }
        printf("Final Matrix: \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("%d ", finalMatrix[i][j]);
            }
            printf("\n");
        }
        break;
    }
    case 2:
    {
        printf("\nEnter Contents of matrix: \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf(" A[%d][%d]: ", i + 1, j + 1);
                scanf("%d", &matrix_1[i][j]);
            }
            printf("\n");
        }
        printf("Matrix : \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("%d ", matrix_1[i][j]);
            }
            printf("\n");
        }
        printf("\n");

        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                finalMatrix[j][i] = matrix_1[i][j];
            }
        }

        printf("Transpose Matrix : \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("%d ", finalMatrix[i][j]);
            }
            printf("\n");
        }
        printf("\n");

        break;
    }
    case 3:
    {
        printf("\nEnter Contents of First matrix: \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("A[%d][%d]: ", i + 1, j + 1);
                scanf("%d", &matrix_1[i][j]);
            }
            printf("\n");
        }

        printf("Matrix 1: \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("%d ", matrix_1[i][j]);
            }
            printf("\n");
        }
        printf("\n");

        printf("\nEnter Contents of Second matrix: \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("B[%d][%d]: ", i + 1, j + 1);
                scanf("%d", &matrix_2[i][j]);
            }
            printf("\n");
        }
        printf("Matrix 2: \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("%d ", matrix_2[i][j]);
            }
            printf("\n");
        }
        printf("\n");

        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                finalMatrix[i][j] = 0;
                for (int k = 0; k < 3; k++)
                {
                    finalMatrix[i][j] += matrix_1[i][k] * matrix_2[k][j];
                }
            }
        }
        printf("Final Matrix: \n");
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                printf("%d ", finalMatrix[i][j]);
            }
            printf("\n");
        }
        printf("\n");
        break;
    }
    default:
        printf("\nInvalid Choice");

        break;
    }

    printf("\n\n");
    return 0;
}

Output

Code