C语言数组指针的大小，64位编译器

#include
void print_ar(int *br,int n)
{
  
    sizeof(br);
    printf("%d",sizeof(br));
}
int main()
{
    int ar[4]={12,23,34,45};
    int size=sizeof(ar);
    int (*s)[4]=&ar;
    int *ip;
    print_ar(ar,4);
    printf("n");
    printf("%d",sizeof(ar));
}

结果：

8
16