What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile?
#include
#define SWAP(a, b, c)(c t; t=a, a=b, b=t)
int main()
{
int x=10, y=20;
SWAP(x, y, int);
printf("%d %d\n", x, y);
return 0;
}
Answer: C
The code won't compile since declaration of t cannot occur within parenthesis.