6.42.cpp

#include<iostream>
#include<string>

std::string make_plural(size_t ctr, const std::string &word, const std::string &ending = "s");

int main()
{
	std::string s1("success");
	std::string s2("failure");
	
	std::cout << make_plural(2, s1) << std::endl;
	std::cout << make_plural(2, s2) << std::endl;
	
	return 0;
}

std::string make_plural(size_t ctr, const std::string &word, const std::string &ending)
{
	return (ctr > 1) ? word + ending : word;
}