Can you reverse the total? (Looping C)

Ok, i mean "can you reverse the number" is the numer already reverse by using Mod(%) my question, can it reverse to normal

example, you enter the number with "2552" it'll change to "2+5+5+2", i mean this is the right answer, but, when you enter another number like "4125" it will change to "5+2+1+4" not "4+1+2+5"

Ok, I just entered the programming world, a newcomer

Hm, with the "if" can it add "+" without exceeding the number like "4+1+2+5+" there are "+" after "5" can delete this "+"?

#include <stdio.h>
main(){
int a, b, h=0;
    printf("Enter the number : ");
    scanf("%d",&a);

    printf("%d = ", a);

    while(a != 0)
    {
        b=a%10;
        a=a/10;
        printf("%d",b);
        if(b != a)
        {
            printf("+");
        }
        h=h+b;
    }
    printf(" = %d\n", h);

}