#include <stdio.h>

int matrixAddition(int numRows, int numColumns)
{

    int matrix1[numRows][numColumns];
    int matrix2[numRows][numColumns];

    printf("\nEnter elements in the first matrix:\n");

    for (int i = 0; i < numRows; i++)
    {
        for (int j = 0; j < numColumns; j++)
        {
            scanf("%d", &matrix1[i][j]);
        }
    }
    printf("\nEnter elements in the second matrix:\n");

    for (int i = 0; i < numRows; i++)
    {
        for (int j = 0; j < numColumns; j++)
        {
            scanf("%d", &matrix2[i][j]);
        }
    }

    printf("\nFirst matrix is: \n");
    for (int i = 0; i < numRows; i++)
    {
        for (int j = 0; j < numColumns; j++)
        {
            printf(" %d ", matrix1[i][j]);
        }
        printf("\n");
    }
    printf("\nSecond matrix is: \n");
    for (int i = 0; i < numRows; i++)
    {
        for (int j = 0; j < numColumns; j++)
        {
            printf(" %d ", matrix2[i][j]);
        }
        printf("\n");
    }

    printf("\nSummed matrix is: \n");
    for (int i = 0; i < numRows; i++)
    {
        for (int j = 0; j < numColumns; j++)
        {
            printf(" %d ", matrix1[i][j] + matrix2[i][j]);
        }
        printf("\n");
    }

    return 0;
}

int scalarMultiplication(int numRows, int numColumns, double scalar)
{
    double matrix[numRows][numColumns];

    printf("\nEnter elements in matrix of size %d*%d! \n", numRows, numColumns);

    for (int i = 0; i < numRows; i++)
    {
        for (int j = 0; j < numColumns; j++)
        {
            scanf("%lf", &matrix[i][j]);
        }
    }

    printf("\nScaled matrix is: \n");
    for (int i = 0; i < numRows; i++)
    {
        for (int j = 0; j < numColumns; j++)
        {
            printf(" %lf ", matrix[i][j] * scalar);
        }
        printf("\n");
    }

    return 0;
}

int determinant()
{
    int det;
    int matrix[2][2];
    printf("\nEnter elements in matrix: \n");
    for (int i = 0; i < 2; i++)
    {
        for (int j = 0; j < 2; j++)
        {
            scanf("%d", &matrix[i][j]);
        }
    };

    printf("\nElements in matrix are: \n");
    for (int i = 0; i < 2; i++)
    {
        for (int j = 0; j < 2; j++)
        {
            printf(" %d ", matrix[i][j]);
        }
        printf("\n");
    }

    det = (matrix[0][0] * matrix[1][1]) - (matrix[0][1] * matrix[1][0]);
    return det;
}

// int buildMatrix(int numRows, int numColumns)
// {

//     int matrix[numRows][numColumns];

//     printf("\nEnter elements in matrix of size %d*%d \n", numRows, numColumns);

//     for (int i = 0; i < numRows; i++)
//     {
//         for (int j = 0; j < numColumns; j++)
//         {
//             scanf("%d", &matrix[i][j]);
//         }
//     }

//     printf("\nElements in matrix are: \n");
//     for (int i = 0; i < numRows; i++)
//     {
//         for (int j = 0; j < numColumns; j++)
//         {
//             printf(" %d ", matrix[i][j]);
//         }
//         printf("\n");
//     }

//     return 0;
// }