#include <iostream>
using namespace std;
#include<vector>
int main()
{
	int cont1,cont2=0;
	vector<int>tor{ 1,2,3,4,5,6,7,8,9,10 };
	for (int i = 0; i < 10; i++)
	{
		cont1 = tor[i] % 2;
		
		cont2 = (cont1 == 1 ? tor[i] * 2 : ' ');    //条件运算符
		if (cont1 == 1)
		{
			cout << tor[i] << '\t' << cont2<<endl;
		}
		
	}
	
   
}