exercise11_31.cpp

#include <map>
#include <string>
#include <iostream>

using std::string;

int main()
{
	std::multimap<string, string> authors{
		{ "alan", "DMA" },
		{ "pezy", "LeetCode" },
		{ "alan", "CLRS" },
		{ "wang", "FTP" },
		{ "pezy", "CP5" },
		{ "wang", "CPP-Concurrency" } };

	string author = "pezy";
	string work = "CP5";

	auto found = authors.find(author);
	auto count = authors.count(author);
	while (count)
	{
		if (found->second == work)
		{
			authors.erase(found);
			break;
		}
		++found;
		--count;
	}

	for (const auto &author : authors)
		std::cout << author.first << " " << author.second << std::endl;

	return 0;
}