else if(c==6)
        {
            int e;
            p=stu;
            printf("选择排序的科目：0 语文，1 数学， 2英语");
            scanf("%d",&e);
            kechengfenshu(p,members,e);
            printf("是否再展开功能？0/1\n");
            scanf("%d",&x);
            if(x==1)
                continue;
            else
                break;
        }
void kechengfenshu(struct student pai[],int w,int s)
{
   int j,i;
   struct student temp;
   for(i=0;i<w-1;i++)
        for(j=i+1;i<w;i++)
            {
                if(pai[i].socer[s]<pai[j].socer[s])
                {
                    temp=pai[i];
                    pai[i]=pai[j];
                    pai[j]=temp;
                }
            }
        if(s==0)
        {
            printf("语文:\n");
        }
        else if(s==1)
        {
            printf("数学:\n");
        }
        else if(s==2)
        {
            printf("英语:\n");
        }
    for(i=0;i<w;i++)
    {
        printf("%d学生信息：\n",i+1);
        printf("学号%d\n",pai[i].xuehao);
        printf("名字:%s\n",pai[i].name);
        printf("性别:%c\n",pai[i].sex);
        printf("分数为：%d\n",pai[i].socer[s]);
    }
}