Levik's lab4

gistfile1.cpp

#include <iostream>
#include <math.h>
#include <conio.h>
#include <time.h>

// settings
#define N 100
#define PRECISION 3

using namespace std;

void main()
{
	float a[N], m, best_diff, nearest, diff, distance;
	unsigned int i, j, element1, element2, precision_factor;

	srand(time(0));
	precision_factor = pow(float(10), PRECISION);
	for (i = 0; i < N; i++)
		a[i] =  float(rand() % 10) + float(rand() % precision_factor) / precision_factor;

	cout << "Array:\n";
	for (i = 0; i < N; i++)
		cout << "a[" << i << "]=" << a[i] << " ";
	cout << "\n\nEnter M: ";
	cin >> m;
	nearest = fabs(m);
	for (i = 0; i < N; i++) {
		for (j = 0; j < N; j++)	{
			if (i == j)
				continue;
			diff = a[i] - a[j];
			distance = fabs(diff - m);
			if (distance < nearest)	{
				best_diff = diff;
				nearest = distance;
				element1 = i;
				element2 = j;
			}
		}
	}
	cout << "Nearest is a[" << element1 << "] - a[" << element2 << "] = " << best_diff;
	getch();
}

проверял в Visual Studio 2010