#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <time.h>
#include "primes.h"

int main(void)
{

	int i,n;
	char file[100];
	FILE  *fout;
	int *pit; 
	time_t start, end;
	double dif;
	
	printf("Input an integer number n\n");
	scanf("%i",&n);
	pit = (int *)malloc(n * sizeof(int)); 

	time (&start);
	FindPrime(n, pit);
	time (&end);
	dif = difftime (end,start);
	printf("Using %.2lf sec. \n",dif);

	printf("Input the filename for result:\n");
	scanf("%s",&file);
	fout=fopen(file,"w");
	for(i=0;i<n;i++)
	{
		fprintf(fout,"%d %d\n",i+1,pit[i]);
	}
	fclose(fout);
	free(pit); 
	return 0;
}