Может быть?

#include <stdio.h>
#include <stdlib.h>
#include <math.h>




int a,product,sum;
int main()
{
printf("\nEnter a:");
scanf("%d", &a);

int firstSym;
firstSym = a/1000;
int secondSym;
secondSym = (a/100)%10;
int thirdSym;
thirdSym = (((a/10)%100)%10);
int fourthSym;
fourthSym = a%10;

product = firstSym + secondSym + thirdSym + fourthSym;
sum = firstSym * secondSym * thirdSym * fourthSym;

if (product>sum)
{
printf("Product top!");
}
else if (product<sum)
{
printf("Sum top!");
}
else
{
printf("idi naxyy");
}




return 0;
}

C

#include <stdio.h>

#include <stdlib.h>

#include <math.h>









int a,product,sum;

int main()

{

    printf("\nEnter a:");

    scanf("%d", &a);



    int firstSym;

    firstSym = a/1000;

    int secondSym;

    secondSym = (a/100)%10;

    int thirdSym;

    thirdSym = (((a/10)%100)%10);

    int fourthSym;

    fourthSym = a%10;



    product =  firstSym + secondSym + thirdSym + fourthSym;

    sum =  firstSym * secondSym * thirdSym * fourthSym;



    if (product>sum)

    {

        printf("Product top!");

    }

    else if (product<sum)

    {

        printf("Sum top!");

    }

    else

    {

        printf("idi naxyy");

    }









    return 0;

}