11-8.cpp

为初学者提供的最佳的C++程序设计源程序库

#include<iostream.h>
#include<iomanip.h>
#include<conio.h>
#include<string.h>
class Score
{
private:
   int Chi;
   int Eng;
   int Mat;
public:
  Score();
  Score(int,int,int);
  void InputScore();
  float ComputeAvr();
  void PrintScore();
};
class student:public Score
{
private:
    char Name[20];
    char Major[20];
    char Number[12];
    float AvrScore;
public:
    student();
    student(char*,char*,char*,int,int,int);
    void DefineData();
    void PrintData();
    void MakeAvr();
};
Score::Score()
{
   Chi=Eng=Mat=0;
}
Score::Score(int c,int e,int m)
{
  Chi=c;
  Eng=e;
  Mat=m;
}
void Score::InputScore()
{
   cout<<"Please enter the Chinese score:";
   cin>>Chi;
   cout<<"Please enter the English score:";
   cin>>Eng;
   cout<<"Please enter the Mathematics score:";
   cin>>Mat;
}
void Score::PrintScore()
{
   cout<<"Chinese="<<setw(3)<<Chi
       <<"English="<<setw(3)<<Eng
       <<"Mathematics="<<setw(3)<<Mat<<endl;
}
float Score::ComputeAvr()
{
  float Avr;
  Avr=(Chi+Eng+Mat)/3.0;
  return(Avr);
}
student::student():Score()
{
  strcpy(Name,"");
  strcpy(Major,"");
  strcpy(Number,"");
  AvrScore=0;
}
student::student(char*n,char *t,char*nu,int c,int e,int m):Score(c,e,m)
{
  strcpy(Name,n);
  strcpy(Major,t);
  strcpy(Number,nu);
  AvrScore=Score::ComputeAvr();
}
void student::DefineData()
{
  cout<<"Please enter the name:";
  cin>>Name;
  cout<<"Please enter the major:";
  cin>>Major;
  cout<<"Please enter the number:";
  cin>>Number;
  Score::InputScore();
  AvrScore=Score::ComputeAvr();
  cout<<"\n";
}
void student::PrintData()
{
  cout<<"Name="<<Name<<endl;
  cout<<"Major="<<Major<<endl;
  cout<<"Number="<<Number<<endl;
  Score::PrintScore();
  cout<<"Average="<<AvrScore<<endl;
  cout<<"\n";
}
main()
{
  char name[]="Chendafan";
  char major[]="Computer";
  char number[]="9912033";
  student Stu1;
  student Stu2(name,major,number,75,66,85);
  Stu1.DefineData();
  Stu1.PrintData();
  Stu2.PrintData();
  getch();
  return 0;
}