#include <iostream>
#include"stdlib.h"
//#include<cmath>
using namespace std;

int main()
{
    //---------------first method
    // Basially even numbers are those whice are divisible by 2,and Odd number
    //are those which numbers are not divisible by 2
//    int num;
//    cout<<"請輸入任意整數"<<endl;
 

//    cin>>num;
//    if(num%2==0){
//        cout<<"是個偶數"<<endl;
//    }
//    else{
//        cout<<"是個奇數"<<endl;
//    }
    //----------------second method
    //using ternary or conditional operator
//    int number;
//    cout<<"Enter any number:";
//    cin>>number;
//    (number%2==0)?cout<<" Even number":cout<<"Odd number";
 

// --------------------thrid method
// check if the given number is Even or Odd Using Bitwise Operator
// and與運算，兩個數同為1才是1，隨便一個奇數轉為二進位制後最後一位
//一定是1，所以奇數與1做與運算結果肯定是1，位運算執行效率較高
    int number;
    cout<<"Enter any number:";
    cin>>number;
    if(number&1)
    {
        cout<<number<<"Odd number"
 
;
    }
    else
    {
        cout<<number<<"Even number";
    }
    system("pause");
    return 0;
}