#include <iostream>
using namespace std;

void function1( int x1 , int x2= 5 , int x3=10 );
//void function1( int x1 , int x2 , int x3 );


int main()
{
	function1( 4 ) ;
	function1( 4 , 15 ) ;
	function1( 4 , 15 , 7) ;
	return(1) ;
}
void function1( int x1 , int x2 , int x3 )
//void function1( int x1 , int x2= 5 , int x3=10 );
{
	cout << x1 << " " << x2 << " " << x3 << endl ;
}