#include <iostream>
#include <conio.h>
#include <math.h>
using namespace std; // 1. Khai bao thu vien
main ()
{
    int i,n;
    cout <<"Nhap 1 so tu 2 den chin = ";
    cin>>n;
    if ((n<2) || (n>9))
       cout<<"Loi. yeu cau nhap lai mot so tu 2 toi 9 ";
    else
        {
        cout <<"Bang cuu chuong cua "<<n << " la :\n";
        for (i=1; i<=9;i=i+1)
      
            cout <<n <<" x " <<i<<" = " <<n*i<<"\n";
           
        }
    
    getch();
}