lt69.c

软件编程入门丛书《C语言程序设计》源代码。

#define N 30
# include "stdio.h"
void main( )               
{ struct student
  { char name[15];
     int No;
     int age;
     int score[5];
     float aver;
    }
 stu1[N],temp;
  int i,j,k;
void write_stu(x);
   for (i=0;i<N;i++)
    {
     scanf("%s%d%d",&stu1[i].name,&stu1[i].No,&stu1[i].age);
     stu1[i].aver=0;
     for (j=0;j<5;j++)
      { scanf("%d",&stu1[i].score[j]);
       stu1[i].aver+=stu1[i].score[j]/5.0;
       }
     }
   for (i=0;i<N-1;i++)
   { k=i;
    for (j=i+1;j<N;j++)
     if (stu1[j].aver>=stu1[k].aver) k=j;
      { temp=stu1[i];
        stu1[i]=stu1[k];
        stu1[k]=temp;}
  }
      for (i=0;i<N;i++)
        write_stu(stu1[i]);
  }
  void write_stu(stu y)
{ printf("%s%4d",y.name,y.No,y.age); 
   for (int j=0;j<5;j++)
     printf("%4d",y.score[j]);
printf("%6.1f\n",y.aver);
}