struct stu
{
  char Name[9];
  char StNum[8];
  int Score[3];
  int Avg;
  int Sum;
};
void main(void)
{
  stu NewSt = new stu;
  cout<<"請輸入學生姓名：";
  cin>>NewSt.Name;
  cout<<"請輸入學生學號：";
  cin>>NewSt.StNum;
  NewSt.Sum = 0;
  for(int i = 0;i<3;i  )
  {
    cout<<"請輸入成積：";
    cin>>NewSt.Score[i];
    NewSt.Sum  = NewSt.Score[i];
  }
  NewSt.Avg = NewSt.Sum / 3;    //NewSt.Sum為總分，
//NewSt.Avg為平均

#include 
#include 
struct stu
{
  char Name[9];
  char StNum[8];
  int chScore;
  int enScore;
  int pgScore;
  int elScore;
  float Avg;
  int Sum;
};
int main()
{
  stu NewSt[3] ;
  char inkey;
  for(int i = 0;i < 3;i  )
  {
    NewSt[i].Sum = 0;
    cout<<"請輸入學生姓名：";
    cin>>NewSt[i].Name;
    cout<<"請輸入學生學號：";
    cin>>NewSt[i].StNum;        cout<<"請輸入你的國文成績\n";
    cin>>NewSt[i].chScore;
    NewSt[i].Sum  = NewSt[i].chScore;
    cout<<"請輸入你的英文成績\n";
    cin>>NewSt[i].enScore;
    NewSt[i].Sum  = NewSt[i].enScore;
    cout<<"請輸入你的程式設計成績\n";
    cin>>NewSt[i].pgScore;
    NewSt[i].Sum  = NewSt[i].pgScore;
    cout<<"請輸入你的電路學成績\n";
    cin>>NewSt[i].elScore;
    NewSt[i].Sum  = NewSt[i].elScore;
    cout<<"輸入是否正確? (y/n)";
    cin>>inkey;
    if(inkey=='Y'||inkey=='y')
    {
      NewSt[i].Avg = NewSt[i].Sum /4.0;
      continue;
    }
    if(inkey=='N'||inkey=='n')
    {
      i--;
      continue;
    }
  }
  for(int i = 0;i<3;i  )
  {
      cout<<"學生姓名 "<    ====================================
懂的不多，卻想學的更多，搞得不自覺的將問題複雜化@@