#include <iostream>
 
int main()
{
	std::size_t const count = 3;
 
	std::cout << "prefix?" << std::endl;
	std::string prefix;
	std::cin >> prefix;
 
	std::cout << "enter words:" << std::endl;
	std::string words[count];
	for (std::size_t i = 0; i < count; ++i)
	{
		std::cin >> words[i];
	}
 
	std::cout << "results:" << std::endl;
	auto prefix_length = prefix.length();
	for (std::size_t i = 0; i < count; ++i)
	{
		auto const& word = words[i];
		if (word.length() >= prefix_length && word.substr(0, prefix_length) == prefix)
		{
			std::cout << word << std::endl;
		}
	}
	return 0;
}

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