#include <stdio.h>

#include <stdlib.h>



typedef struct _ss{

	int a;

	int b;

}ss;



void fun( ss &s){

	s.a = 2;

	s.b = 3;

	printf("fun:%d %d\n", 	 s.a, s.b);

}



void fun2(ss *s){

	s->a=55;

	printf("fun2:%d %d\n", s->a, s->b);

}



void fun3(ss *s){

	fun(*s);

}



void fun4(ss &s){

	fun2(&s);

}



int main(){

	ss s;

	

	printf("test\n");

	s.a=1;

	s.b=1;

	



	printf(" def:%d %d\n", s.a, s.b);

	fun(s);



	printf(" def1:%d %d\n", s.a, s.b);

	

	fun2(&s);

	printf(" def2:%d %d\n", s.a, s.b);



	fun3(&s);



	printf(" def3:%d %d\n", s.a, s.b);





	fun4(s);



	printf(" def4:%d %d\n", s.a, s.b);



	return 0;

}