#include <iostream.h>

int get(int in1=5,int in2=10,int in3=15);

int main()
{
int one=7,two=8;
	cout<<get(one,two,9)<<"\n";
	cout<<get(one,two)<<"\n";
	cout<<get(one)<<"\n";
	cout<<get()<<"\n";
	return 0;
}

int get(int in1,int in2,int in3)
{
	return in1+in2+in3;
}