C++ 字符串分割

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

//字符串分割函数
std::vector<std::string> split(std::string str, std::string pattern)
{
	std::string::size_type pos;
	std::vector<std::string> result;
	str += pattern;//扩展字符串以方便操作
	int size = str.size();

	for (int i = 0; i < size; i++)
	{
		pos = str.find(pattern, i);
		if (pos < size)
		{
			std::string s = str.substr(i, pos - i);
			result.push_back(s);
			i = pos + pattern.size() - 1;
		}
	}
	return result;
}

int main()
{
	std::string str = "aaaa,bbbb,cccc,dddd,ffff";
	std::string pattern = ",";
	std::vector<std::string> result = split(str, pattern);
	std::cout << "The result:" << std::endl;
	for (int i = 0; i < result.size(); i++)
	{
		std::cout << result[i] << std::endl;
	}
	return 0;
}