#include <stdio.h>#define RevByte(low,high) ((high) << 8 | (low))#define RevWord(lowest,lower,higher,highest) ((highest) << 24 | (higher) << 16 | (lower) << 8 | lowest)int main(){  int a;  a = RevWord(0x0a,0x0b,0x0c,0x0d);    printf("%x\n",a);  return 0;}