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Code:
#include <iostream>
//#include <conio.h>
#include <string.h>
using namespace std;
class SINHVIEN
{
private:
char *hoten;
protected:
int sbd;
public:
void get_name(void);
void get_sbd(void);
void put_name(void)
{
cout<<"hoten: "<<hoten<<endl;
}
void put_sbd(void)
{
cout<<"sbd: "<<sbd<<endl;
}
};
void SINHVIEN::get_name()
{
char S[30];
cout<<"nhap ho ten: ";
gets(S);
int k=strlen(S);
hoten = new char[k+1];
strcpy(hoten,S);
}
void SINHVIEN::get_sbd(void)
{
int x;
cout<<"nhap so bao danh: ";
cin>>x;
sbd=x;
}
class DIEMTHI:public SINHVIEN
{
protected:
float mon1,mon2;
public:
void get_diem(void);
void put_diem(void);
};
void DIEMTHI::get_diem()
{
float m1,m2;
cout<<"nhap diem mon 1:"; cin>>m1; mon1=m1;
cout<<"nhap diem mon 2:"; cin>>m2; mon2=m2;
}
void DIEMTHI::put_diem()
{
cout<<"mon1: "<<mon1<<endl;
cout<<"mon2: "<<mon2<<endl;
}
class UUTIEN
{
protected:
float u;
public:
void get_ut(void);
void put_ut(void)
{
cout<<"uu tien: "<<u<<endl;
}
};
void UUTIEN::get_ut()
{
float u1;
cout<<"nhap diem uu tien: ";
cin>>u1;
u=u1;
}
class KETQUA:public DIEMTHI,public UUTIEN
{
private:
float tong;
public:
friend ostream& operator <<(ostream&, KETQUA &);
};
ostream& operator << (ostream& dout, KETQUA& k)
{
k.tong=k.mon1+k.mon2+k.u;
k.put_name();
k.put_sbd();
k.put_diem();
k.put_ut();
dout<<"tong diem: "<<k.tong<<endl;
return dout;
}
int main()
{
const int n = 2;
KETQUA S[n];
int i;
for(i=0;i<n;i++)
{
S[i].get_name();
S[i].get_sbd();
S[i].get_diem();
S[i].get_ut();
}
for(i=0;i<n;i++)
cout<<S[i];
//getche();
return 0;
}
lôi.png
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