#include "header.h"
//function value of problem A 
int fA(Vector x,float *fp,int spec)
{
	static int c=0; //counter of run times
	int i;
	float sum=0;
	if(spec==1) return c; // spec==1 means we want counter
	else                  // spec==0 means we want function value
	{
		c++;
		for(i=1;i<x.n-1;i++)
		{
			sum+=(float)sin(x.fp[i]*x.fp[i+1]+cos(x.fp[i-1]-x.fp[i]));  //inner stuff
		}
		*fp=sum;
	}
	return 0;
}