结构体成员排序

 #include <stdio.h>
#include <string.h>
struct student
{
 int num;
 char name[10];
 float score;
}a[5];

main()
{
      int i,j,number;
      char nam[10];
      float scor;
      printf("please input number and name and score:/n");
      for(i=0;i<5;i++)
 scanf("%d %s %f",&a[i].num,a[i].name,&a[i].score);
      for(i=0;i<4;i++)
      for(j=i+1;j<5;j++)
  {
   if(a[i].num>a[j].num)
   {
    number=a[i].num;a[i].num=a[j].num;a[j].num=number;
    strcpy(nam,a[i].name);strcpy(a[i].name,a[j].name);strcpy(a[j].name,nam);
    scor=a[i].score;a[i].score=a[j].score;a[j].score=scor;
   }
  }
 printf("There are students profiles:/n");
 for(i=0;i<5;i++)
  printf("%d, %s, %g/n",a[i].num,a[i].name,a[i].score);
}