#include "header.h"

Vector CreateVector(int n)
{
	Vector x;
	x.n = n;
	x.fp = (float *) calloc(n,sizeof(float)); // Allocates a block of memory for a vector of n elements, each of them 'float' long, and initializes to 0.
	return x;
}

Vector ReadVector()
{
	int i,n;
	float tmp;
	Vector x;

	scanf("%d",&n);	// dimention of the vector
	x.n=n;
	x.fp = (float *) calloc(n,sizeof(float));

	if (x.fp==NULL) exit (1);	// If the function calloc() failed to allocate the requested block of memory, a NULL pointer is returned.
	for (i=0;i<n;i++)
	{
		scanf ("%f",&x.fp[i]);	// read the float numbers to x.fp[0]~x.fp[n-1]
	}

	return x;
}

void PrintVector(Vector x)
{
	int i;

	// print the vector x on the screen
	printf ("The vector x is: \n %d\t",x.n);
	for(i=0; i<x.n; i++)
	{
		printf(" %f\t",x.fp[i]);
	}
	printf("\n");
}

void DestroyVector(Vector x)
{
    free(x.fp);	// makes x.fp available again for further allocations
}