Harshad Numbers

#include <stdio.h>
#include <stdlib.h> //includes the functions malloc(), realloc(),free()

#define Limit 10000
int main()
{
    int *numbers,*temp; // The temp array is needed in order to make the numbers array dynamic
    numbers = malloc(sizeof(int));
    int i,monads,decades,hundreds,thousands;
    int sum = 0;
    int count =0;


    for(i=10; i<Limit; i++){

        //Different sum logics for different digit numbers
        if(i>=10 && i<100)
        {
            monads = i%10;
            decades = i/10;
            sum = monads + decades;

        }
        else if(i>=100 && i<1000)
        {
            monads = i%10;
            decades = (i%100)/10;
            hundreds = i/100;
            sum = monads + decades + hundreds;
        }
        else
        {
            monads = i%10;
            decades = (i%100)/10;
            hundreds = (i%1000)/100;
            thousands = i/1000;
            sum = monads + decades + hundreds + thousands;
        }

        if(i%sum==0){

            /*Error checking:
            If the operating system can't allocate more memory for your program,
            malloc will fail and return a NULL value.
            It's always a good idea to make sure malloc is successful:*/

            numbers[count] = i; /* Put The found number to the existing array */
            temp = realloc(numbers,(count+2)*sizeof(int)); /* give the pointer some memory */
            if( temp != NULL ) //realloc was successful
                numbers = temp;
            else //realloc was not succesfull
            {
                free(numbers); //free the memory !important
                printf("Error allocating memory!\n");
                return 1; //Terminate Program with error 1
            }

            count++;
        }
    }
    printf("The Count of Harshad Numbers : %d\n\n",count);
    for (i=0; i<count; i++){
        printf("%d\n",numbers[i]);
    }

    free(numbers);

    return 0;
}