strange result on macro expansion

Question

Consider the following code snippet

#include
#define A -B
#define B -C
#define C 5

int main()
{
  printf(\"The value of A is %d\\n\", A);
  r         


        

Answer 1

I do not think so. Even macro expansion is text processing, it is impossible to create a token from across macro boundaries. Therefore it as -(-5), not --5, because -- is a single token.