循环数组输入数据后，只能输出最后一组数据，哪里产生了错误？

代码如下：

#include<iostream>
using namespace std;
#include<string.h>

class Grade{
   public:
   Grade(string name,int grade,char level);
   Grade(Grade &G);
   int const PrintData(string name,int grade);
   int Getcount();
   friend int Horl(Grade &m,Grade &n);//友元比较两个学生成绩的
       void SetInfo(string name,int grade);
private:
   string name;
   int grade;
   char level;
   int static count;
       int grading(int grade)//对应学生成绩等级
       {
           grade=grade/10;
           if(grade>=0&&grade<=5) level='E';
           if(grade==6) level='D';
           if(grade==7) level='C';
           if(grade==8) level='B';
           if(grade==9||grade==10) level='A';
       }
};

Grade::Grade(string name,int grade,char level):name(name),grade(grade),level(level)
{
cout<<"calling constructor of Grade"<<'\n';
}

Grade::Grade(Grade &G)
{
   name=G.name;
   grade=G.grade;
   level=G.level;
   cout<<"calling copy of constructor of Grade"<<'\n';

}

int Grade::count=0;

const int Grade::PrintData(string name,int grade)
{
   grading(grade);
   cout<<"学生姓名："<<name<<'\n';
   cout<<"成绩："<<grade<<'\n';
   cout<<"等级："<<level<<'\n';
count=count+1;
}

Grade::Getcount()
{
cout<<"学生总数："<<count<<'\n';
}

void Grade::SetInfo(string name,int grade)
{

   this->name=name;
   this->grade=grade;

}

int Horl(Grade &m,Grade &n)
{
   int a=m.grade-n.grade;
   if(a==0)
   cout<<"两位同学成绩一样高"<<endl;
   if(a>0){
       cout<<m.name<<"同学成绩较高"<<'\n'<<"具体信息："<<'\n';
       m.PrintData(m.name,m.grade);
   }
   if(a<0){
       cout<<n.name<<"同学成绩较高"<<'\n'<<"具体信息："<<'\n';
       n.PrintData(n.name,n.grade);
   }
}

int main()
{

Grade *G[6];
string name;
   int grade;
   char level='0';
for(int i=0;i<2;i++)
{
   cout<<"输入第"<<i+1<<"名学生名称：";
   cin>>name;
   cout<<"输入成绩：";
   cin>>grade;
   G[i]=new Grade(name,grade,level);
   G[i]->SetInfo(name,grade);

   }
   cout<<"输出储存的信息："<<'\n';
   for(int i=0;i<2;i++)
   {
       G[i]->PrintData(name,grade);
       delete G[i];
   }