#include <time.h>
#include <stdio.h>
#include <stdlib.h>

static clock_t begin;
static clock_t then;
static clock_t now;

void start_timing()
{
	now = clock();
	begin = clock();
}

void timing(char *message)
{
	double secs;

	then = now;
	now = clock();

	secs = double(now-then)/CLOCKS_PER_SEC;

	printf("%s: %6.2f\n", message, secs);
}

void end_timing()
{
	double secs;

	now = clock();

	secs = double(now-begin)/CLOCKS_PER_SEC;

	printf("%s: %6.2f\n\n", "Total time", secs);
}