09/07/16 02:05:38
>>144
①
#include <stdio.h>
int main(){
printf("%d",0xabcd & 0xff00);
return 0;
}
②
int bit_set(int x, int y){
return x | (1<<(y-1));
}
③
int bit_clear(int x, int y){
return x & ~(1<<(y-1));
}
④
int bit_test(int x,int y){
return (x>>(y-1)) & 1;
}