#include"stdio.h"

#include"conio.h"

#include"iostream.h"

#include"iomanip.h"

#include"math.h"

class dayso

    {

            private:

                    float a[50];

                        int n;

                public:

                        friend void doc(char *tentep,dayso &ds);

                        friend void ghi(char *tentep);

                        void nhap();

                        void xuat();

                        void nguyento();

                        void chinhphuong();

                        void hoanhao();

                        void sapxep();

                        void chen();

        };

void dayso::nhap()

    {

            int i;

                cout<<"

Nhap so phan tu cho day n="; cin>>n;

                for(i=1;i<=n;i++)

                {

                    cout<<"

a["<<i<<"]=";

                        cin>>a[i];

                        }

        }

void doc(char *tentep,dayso &ds)

    {

            FILE *f;

                f=fopen(tentep,"rb");

                   fread(&ds,sizeof(dayso),1,f);

                        fclose(f);

                }

void taofile(char *tentep)

    {

            FILE *f;

                  dayso tg;

                f=fopen(tentep,"wb");

                 cout<<"

Nhap day so:";

                tg.nhap();

                fwrite(&tg,sizeof(dayso),1,f);

                fclose(f);

                }

void dayso::xuat()

    {

            int i;

                for(i=1;i<=n;i++)

                    cout<<setw(5)<<a[i];

        }

void xuatfile(char *tentep)

    {

            FILE *f;

                   dayso tg;

                f=fopen(tentep,"rb");

                fread(&tg,sizeof(dayso),1,f);

                cout<<"

Day so la:";

                    tg.xuat();

                        fclose(f);

        }

int nt(int a)

    {

            int i,d;

                if(a==1)

                    return 0;

                if(a==2)

                    return 1;

                if(a>2)

                   d=0;

                           for(i=2;i<=a/2;i++)

                        if(a%i==0)

                                d=d+1;

                        if(d==0)

                            return 1;

                        else

                            return 0;

                }

void dayso::nguyento()

    {

            int i;

                for(i=1;i<=n;i++)

                if(nt(a[i]))

                cout<<setw(5)<<a[i];

        }

int cp(int a)

    {

            if(sqrt(a)==int(sqrt(a)))

                    return 1;

                else

                    return 0;

        }

void dayso::chinhphuong()

    {

            int i;

                for(i=1;i<=n;i++)

                if(cp(a[i]))

                cout<<setw(5)<<a[i];

        }

int hh(int a)

    {

            int i,d;

                d=0;

                for(i=1;i<=a/2;i++)

                if(a%i==0)

                        d=d+i;

                if(d==a)

                    return 1;

                else

                    return 0;

        }

void dayso::hoanhao()

    {

            int i;

                for(i=1;i<=n;i++)

                if(hh(a[i]))

                cout<<setw(5)<<a[i];

        }

void dayso::sapxep()

    {

            int i,j,tg;

        for(i=1;i<n;i++)

                    for(j=i+1;j<=n;j++)

                        if(a[i]>a[j])

                        {

                            tg=a[i];

                                a[i]=a[j];

                                a[j]=tg;

                        }

        }

void dayso::chen()

    {

            int i,k,m;

                cout<<"

Nhap gia tri can chen m=";

                cin>>m;

                k=0;

                while(a[k]<=m)

                    k++;

                if(k>n)

                    a[n+1]=m;

                        for(i=n+1;i>k;i--)

                            a[i]=a[i-1];

                                a[i]=m;

                                n++;

        }

void main()

    {

                char *tentep;

        dayso ds;

                clrscr();

        cout<<"

Nhap ten file:"; gets(tentep);

                taofile(tentep);

                cout<<"

Du lieu tu file:";

                xuatfile(tentep);

                cout<<"

";

                doc(tentep,ds);

                cout<<"

Du lieu tu lop:";

                cout<<"

Day so la:";

                ds.xuat();

                cout<<"

Cac so nguyen to la:";

                ds.nguyento();

                cout<<"

Cac so chinh phuong la:";

                ds.chinhphuong();

                cout<<"

Cac so hoan hao la:";

                ds.hoanhao();

                cout<<"

Day sau khi sap xep tang la:

";

                ds.sapxep();

                ds.xuat();

                ds.chen();

                cout<<"

Day so sau khi chen la:";

                ds.xuat();

                getch();

    }