LÝ THUYẾT TRÒ CHƠI

#include<conio.h>

#include<stdio.h>

//#include<string.h>

class cmt

{

char *so,*ten;

int nam;

public:

cmt();

cmt(char*so1,char*ten1,int nam1);

~cmt();

cmt operator = (cmt &);

cmt(const cmt &);

void nhap();

void xuat();

int lnam();

cmt *dc();

};

cmt::cmt()

{

so=new char[10];

ten=new char[25];

nam=0;

};

cmt::cmt(char* so1,char* ten1,int nam1) {

ten=new char[25]; strcpy(so,so1); strcpy(ten,ten1); nam=nam1;

};

cmt::~cmt()

{

delete so;

delete ten;

nam=0;

};

cmt::cmt(const cmt &t) {

so=new char[25]; ten=new char[10]; strcpy(so,t.so); strcpy(ten,t.ten); nam=t.nam;

};

cmt cmt::operator=(cmt &t) {

strcpy(so,t.so); strcpy(ten,t.ten); nam=t.nam;

return t;

};

void cmt::nhap()

{

cout<<"\n nhap so cmt ";cin>>so;

cout<<"\n nhap ten ";cin>>ten;

cout<<"\n nhap nam ";cin>>nam;

};

void cmt::xuat()

{

cout<<"\n so cmt la "<<so;

cout<<"\n ten la "<<ten;

cout<<"\n nam sinh la "<<nam;

};

int cmt::lnam()

{

return nam;

};

cmt *cmt::dc()

{

return this;

};

class sv:public cmt

{

float dtb; char *lop;

public:

sv();

sv(char *so1,char *ten1,int nam1,float dtb1, char *lop1); sv&operator = (sv &);

~sv();

void nhap();

sv(sv &);

float dtb1();

};

sv::sv():cmt()

{

dtb=0;

lop=new char[25];

};

sv::sv(char *so1,char *ten1,int nam1,float dtb1,char *lop1):cmt(so1,ten1,nam1) {

dtb=dtb1;

lop=new char[25];

strcpy(lop,lop1);

};

sv&sv::operator=(sv &t)

{

cmt *dta1,*dta2;

dta1=(*this).dc();

dta2=t.dc();

(*dta1)=(*dta2);

dtb=t.dtb;

lop=new char[25];

strcpy(lop,t.lop);

return t;

};

sv::~sv()

{

delete lop;

dtb=0;

};

sv::sv(sv &t)

{

*this=t;

};

void sv::nhap()

{

cmt::nhap();

cout<<"\n nhap diem trung binh ";cin>>dtb; cout<<"\n nhap lop ";cin>>lop;

};

void nhap1(sv a[],int k)

{

for(int i=0;i<k;i++)

{

cout<<"\n nhap thong tin sv thu "<<i+1; a[i].nhap();

};

};

void sv::xuat()

{

cmt::xuat();

cout<<"\n diem trung binh la "<<dtb;

cout<<"\n lop la "<<lop;

};

return dtb;

};

sv maxdtb(sv a[],int k)

{

sv temp=a[0];

int i=0;

for(i=1;i<k;i++)

if(temp.dtb1()<a[i].dtb1())temp=a[i]; return temp;

};

sv maxtuoi(sv a[],int k)

{

sv temp;

temp=a[0];

int i=0;

for(i=1;i<k;i++)

if(temp.lnam()>a[i].lnam())temp=a[i]; return temp;

};

int main()

{

sv *a;

int n;

cout<<"\n nhap so sinh vien ";

cin>>n;

a=new sv[n];

cout<<"\n nhap thong tin tung sinh vien";

cout<<"\n nguoi co diem trung binh cao nhat la "; maxdtb(a,n).xuat();

cout<<"\n nguoi co tuoi lon nhat la ";//a[0].xuat(); maxtuoi(a,n).xuat();

getch();

};