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C Program to Calculate the Sum of the Elements of each Row & Column

C Program to Calculate the Sum of the Elements of each Row & Column

This C program reads a matrix A (MxN) & finds the following using functions
a) Sum of the elements of each row
b) Sum of the elements of each column
c) Find the sum of all the elements of the matrix

1. Take the MxN matrix as input.
2. Define two functions separately for row sum and column sum.
3. Use for loops to calculate the sum of the elements of each row & column in a given matrix.
4. Either add all the calculated row sum or column sum to get the sum of all elements of the matrix.


    #include <stdio.h>

    int Addrow(int array1[25][25], int k, int c);

    int Addcol(int array1[25][25], int k, int r);

    void main()

    {

        int arr[25][25];

        int x, j, row, col, rowsum, colsum, sumall=0;

        printf("Enter the order of the matrix \n");

        scanf("%d %d", &row, &col);

        printf("Enter the elements of the matrix \n");

        for (x = 0; x < row; x++)

        {

            for (j = 0; j < col; j++)

            {

                scanf("%d", &arr[x][j]);

            }

        }

        printf("Input matrix is \n");

        for (x = 0; x < row; x++)

        {

            for (j = 0; j < col; j++)

            {

                printf("%3d", arr[x][j]);

            }

            printf("\n");

        }

        /*  computing row sum */

        for (x = 0; x < row; x++)

        {

            rowsum = Addrow(arr, x, col);

            printf("Sum of row %d = %d\n", x + 1, rowsum);

        }

        /*  computing col sum */

        for (j = 0; j < col; j++)

        {

            colsum = Addcol(arr, j, row);

            printf("Sum of column  %d = %d\n", j + 1, colsum);

        }

        /*  computation of all elements */

        for (j = 0; j < row; j++)

        {

            sumall = sumall + Addrow(arr, j, col);

        }

        printf("Sum of all elements of matrix = %d\n", sumall);

    }

    /*  Function to add each row */

    int Addrow(int array1[25][25], int k, int c)

    {

        int rsum = 0, x;

        for (x = 0; x < c; x++)

        {

            rsum = rsum + array1[k][x];

        }

        return(rsum);

    }

    /*  Function to add each column */

    int Addcol(int array1[25][25], int k, int r)

    {

        int csum = 0, j;

        for (j = 0; j < r; j++)

        {

            csum = csum + array1[j][k];

        }

        return(csum);

    }