Deduplicating numbers in C++

deduplicate_numbers.cpp

#include <iostream>

int main()
{
	int number_counts[100] = { 0 };  // initializing an array of 100 elements with all of their value set to zero
	int input_nums[] = { 1, 4, 6, 3, 9, 6, 7, 2, 3, 6, 8, 7, 3, 5, 6 };  // the input array

	// looping over the input array and incrementing the count of an input
	for (int i: input_nums) {
		number_counts[i] = number_counts[i] + 1;
	}

	// just printing stuff
	std::cout << "Duplcate Values = ";
	for (int i = 0; i < 100; i++) {
		if (number_counts[i] > 1) {
			std::cout << i << ", ";
		}
	}
	std::cout << std::endl;
	
	// more printing
	std::cout << "Non Duplicate Values = ";
	for (int i = 0; i < 100; i++) {
		if (number_counts[i] == 1) {
			std::cout << i << ", ";
		}
	}
}