code in c

// create a layer of zeroes to given matrix to make recursion process easy int rec(int **arr,int i,int j,int count){

if (arr[i][j] !=0) {
      count++;
      arr[i][j] = 0;
      count = rec(arr,i-1,j,count);
      count = rec(arr,i+1,j,count);
      count = rec(arr,i,j+1,count);
      count = rec(arr,i,j-1,count);
      count = rec(arr,i-1,j-1,count);
      count = rec(arr,i-1,j+1,count);
      count = rec(arr,i+1,j-1,count);
      count = rec(arr,i+1,j+1,count);
}
return count;

} int connectedCell(int matrix_rows, int matrix_columns, int** matrix) {

    int **arr =(int**) malloc((matrix_rows+2)*sizeof(int*));
    for(int i= 0;i<matrix_rows+2;i++) 
          arr[i] =(int*) calloc(matrix_columns+2, sizeof(int));

    int max = INT_MIN;
    for (int i=1; i<matrix_rows+1; i++) {
         for (int j=1; j<matrix_columns+1; j++) {
                for (int k=0;k<matrix_rows;k++)
                 {
                      for (int l=0;l<matrix_columns;l++)
                         arr[k+1][l+1] = matrix[k][l];
                 }
                 int count =0;
                 count = rec(arr,i,j,count);
                 if (count>max){ max = count; }
         }
    }
    free(arr);
return max;  

}