Input doubt?

Dear All,
i have doubt in working of scanf:-

Code:

---

void main()
              {
          int a,b,c;
          scanf("%1d %2d %3d",&a,&b,&c);
          printf("Sum=%d",a+b+c);
              }

---

if i give input as 123456 44 544
output is = 480
How it is possible?

1+23+456 = ?

find out whats happening by printing out the values of a,b,c respectively

Code:

---

scanf("%d %d %d",&a,&b,&c);
fflush(stdin);

---

not %1d %2d %3d

learn about padding...