HDU 2023 求平均成绩

#include <stdio.h>
#include <stdlib.h>
struct student
{
double score[6];//每门成绩
double av;//平均成绩
int design;//标记是否大于平均成绩
}stu[55];
int main ( )
{
int n,m,i,j,c;

while ( scanf ( "%d%d",&n,&m ) == 2 )
{
double sum[6] = {0,0,0,0,0,0},ave[6];
c = 0;
for ( i = 0 ; i < n; ++i )
{
stu[i].av = 0;
for ( j = 0; j < m ; ++j )
{
scanf ( "%lf",&stu[i].score[j] );
stu[i].design = 1;//将标记初始化
stu[i].av += stu[i].score[j];//求每个学生的总成绩
sum[j] += stu[i].score[j];//求每门成绩的和
}
stu[i].av = stu[i].av / m;//每个学生的平均成绩
}
for ( j = 0 ; j < m; ++j )//每门课的平均成绩
ave[j] = sum[j] / n;
for ( i = 0 ; i < n ; ++i )
{
i == 0 ? printf ( "%.2lf" ,stu[i].av ):printf( " %.2lf",stu[i].av );//输出每个学生的平均成绩
for ( j = 0; j < m; ++j )
if ( stu[i].score[j] < ave[j] )//遍历学生以找出大于平均成绩的学生
stu[i].design = 0;
if ( stu[i].design == 1 )//统计大于平均成绩的学生
++c;
}
printf ( "\n" );
for ( j = 0 ; j < m ; ++j )
j == 0 ? printf ( "%.2lf",ave[j] ) : printf ( " %.2lf",ave[j] );//输出每门成绩的平均分
printf ( "\n" );
printf ( "%d\n",c );
}
return 0;
}