#include<stdio.h>
#include<stdlib.h>
void fun(float *p1,float *p2,float *s)
{
	s=(float*)calloc(1,sizeof(float));
	*s=*p1+*p2++;
}
main()
{
	float a[2]={1.1,2.2};float b[2]={10.0,20.0},*s=a;
	fun(a,b,s);
	printf("%5.2f\n",*s);
	 
}