number13.cpp

#include "pch.h"
#include <windows.h>
#include <conio.h>
#include <stdio.h>
#include <math.h>
#include <iostream>

int getArrSize(int* arr);

int main() {
	SetConsoleOutputCP(1251);
	SetConsoleCP(1251);
	
	int k, index = 0, delta2, delta1;
	const int size = 20;
	int a[size] = {12, 1, 301, 54, 213, 0, 342, 443, 1000, 32, 3, 12, 6, 765, 678, 456, 654, 7, 10, 20};

	scanf_s("%i", &k);

	delta1 = abs(a[0] - k);
	for (int i = 1; i < size; i++) {
		delta2 = abs(a[i] - k);
		if (delta2 < delta1) {
			delta1 = delta2;
			index = i;
		}
	}

	printf("Element: %i\nIndex: %i", a[index], index);
	
	_getch();
	return 0;
}