Can anyone explain output

Question

#define power(a) #a
  int main()
  {
    printf("%d",*power(432));
     return 0;
  }

can anyone explain the o/p??
the o/p is

52

Answer 1

It is equivalent to:

printf("%d",*"432");

which is equivalent to:

printf("%d", '4');

and the ASCII value of '4' is 52 .

Answer 2

#define power(a) #a   //# is a stringization operation in macro
  int main()
  {
    printf("%d",*power(432));
     return 0;
  }

Hence after calling power(432), macro will return it "432" and applying * on it gives first value which is nothing but 52 (48 + 4) for '4' .