Check the Sparse matrix with C.

#include <stdio.h>

int main()
{
    int A[3][3];
    int row, col, total = 0;

    /* Input elements in matrix from user */
    printf("Enter elements in matrix of 3 3x3: \n");
    for (row = 0; row < 3; row++)
    {
        for (col = 0; col < 3; col++)
        {
            scanf("%d", &A[row][col]);
        }
    }

    /* Count total number of zero elements in the matrix */
    for (row = 0; row < 3; row++)
    {
        for (col = 0; col < 3; col++)
        {
            /* If the current element is zero */
            if (A[row][col] == 0)
            {
                total++;
            }
        }
    }

    if (total >= (row * col) / 2)
    {
        printf("\nThe given matrix is a Sparse matrix.");
    }
    else
    {
        printf("\nThe given matrix is not Sparse matrix.");
    }

    return 0;
}

Output

Enter elements in matrix of size 3x3 :
1 0 0
4 5 0
0 0 0

The given matrix is a Sparse matrix.