Author: azurenote
C++ native speaker / Py as 2nd language / D newbie
풍경은 근성이다
SWAP 매크로
void swap(void* a, void* b) { void* temp; temp = a; a = b; b = temp; } //vs #define SWAP(a,b) ((a)^=(b)^=(a)^=(b)) //매크로 풀어보기 void main() { //a = 1010, b = 0011 int a = 10, b = 3; a ^= b; //a = 1001 == 1010 ^ 0011; b ^= a; //b = 1010 == 0011 ^ 1001; a ^= b; //a = 0011 == 1001 ^ 1010; }