int abc(int *x,int *y)                                          int abc(int *x,int *y)
{int a;                                                          {int a;
    a=*x;                                                         a=*x;
    *x=*y;                                                        *x=*y;
    *y=a;                                                          *y=a;
 }                                                                 }
main()                                                            main()
{int a,b,*c,*d;                                                   {int a,b,*c,*d;
    scanf("%d%d",&a,&b);                                       scanf("%d%d",&a,&b);
    c=&a;d=&b;                                                     c=&a;d=&b;
    if(a>b) abc(c,d);                                           if(a>b) abc(*c,*d);
    printf("a=%db=%d\n",a,b);                                      printf("a=%db=%d\n",a,b);
   
}                                                                     }
请教各位，为什么 abc（c,d）不能换成abc(*c,*d)呢？
指针变量*c,*d不是分别指向a.b的吗，在调用"abc"时，为什么（*x,*y）就不能转换了

谢谢LS我主要使用指针做参数进行值传递，不明白的是前者"c,d"分别为"&a,&b",后者"*c,*d"不也是"&a,&b"吗？为什么后者不能换成前者了