指针理解小代码

#include <stdio.h>
void main()
{
int a,b,c;
int *pa,*pb,*pc;
pa=&a,pb=&b;pc=&c;
scanf("%d%d",pa,pb);
printf("a=%d,b=%d/n",*pa,*pb);
c=a+b;
printf("c=%d/n",c);
*pc=a+*pb;
printf("c=%d/n",c);
c=*pa**pb;
printf("c=%d/n",c);
c=++*pa+(*pb)++;
printf("c=%d/n",c);
c=(*pa)+++*pb;
printf("c=%d/n",c);
printf("a=%d,b=%d",a,b);

}