/* added on 2003-05-18 
 * by hofman  
*/ 
#define INF "%d %s %f %f %f"  
#define OUTF "%d %s %f %f %f %f %f"  

main() 
{ 
 struct score { 
 int sn; 
 char name[10]; 
 float maths; 
 float c; 
 float en; 
 float total; 
 float avg; 
}; 
 int i;  
 struct score scores306[50];  
 /* 定义指针数组  */ 
 struct score *k[50]; 
 struct score *p; 
 p = scores306; 
/* input  */ 
 for(i=0;i<50;i++) 
 { 
  printf("Input sn name maths c en \n"); 
  scanf(INF,&p-&gt;sn,p-&gt;name,&p-&gt;maths,&p-&gt;c,&p-&gt;en); 
  p-&gt;total=(p-&gt;maths)+(p-&gt;c)+(p-&gt;en); 
  p-&gt;avg=(p-&gt;total)/3; 
 /*  将指针放入指针数组  */ 
  k<i> = p; 
  p++; 
 } 
/* output  */ 
 for(i=0;i<2;i++) 
  { 
  /*  从指针数组中取出指针  */ 
   p = k<i>; 
   printf(OUTF,p-&gt;sn,p-&gt;name,p-&gt;maths,p-&gt;c,p-&gt;en,p-&gt;total,p-&gt;avg); 
   printf("\n"); 
  } 
} 
  /* 
   为什么要用指针数组呢？不用? 
  */