2D Matrix in C program

 #include <stdio.h>

int main()

{

    int rowCount, columnCount, i, j;

    int firstMatrix[10][10], secondMatrix[10][10], resultMatrix[10][10];

    printf("Number of rows of matrices to be added : ");

    scanf("%d", &rowCount);

    printf("Number of columns matrices to be added : ");

    scanf("%d", &columnCount);

    printf("Elements of first matrix : \n");

    for (i = 0; i < rowCount; i++)

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

            scanf("%d", &firstMatrix[i][j]);

    printf("Elements of second matrix : \n");

    for (i = 0; i < rowCount; i++)

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

            scanf("%d", &secondMatrix[i][j]);

    printf("Sum of entered matrices : \n");

    }