#include <iostream>
#include <vector>
#include <string>

void cfunc(char const *cstr)
{
	std::cout << cstr << std::endl;
}

int main()
{
	std::vector<std::string> nums;
	for(std::size_t i = 0; i < 50; ++i)
	{
		nums.push_back(std::to_string(i));
	}
	for(auto const &str : nums)
	{
		cfunc(str.c_str());
	}
}