猜猜执行结果

猜猜执行结果

static const char *msg[] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
char *get_a_day(int idx)
{
 static char buf[20];
 strcpy(buf, msg[idx]);
 return buf;
}

int main()
{
 char *day0 = get_a_day(0);
 char *day1 = get_a_day(1);
 printf("%s %s\n", day0, day1);
 return 0;
}

结果是什么？