C++ 结构体数据读取文件

namespace _02
{
	struct student
	{
		char name[20];
		char sex[20];
		int age;
	};

	vector<string> split(const string& src, string delimit, string null_subst = "")
	{
		typedef basic_string<char>::size_type s_t;
		static const s_t npos = -1;
		if (src.empty() || delimit.empty())
		{
			throw "split:empty string\0";
		}
		vector<string> v;
		s_t deli_len = delimit.size();
		s_t index = npos, last_search_position = 0;
		while ((index = src.find(delimit, last_search_position)) != npos)
		{
			if (index == last_search_position)
			{
				v.push_back(null_subst);
			}
			else
			{
				v.push_back(src.substr(last_search_position, index
					- last_search_position));
			}
			last_search_position = index + deli_len;
		}
		string last_one = src.substr(last_search_position);
		v.push_back(last_one.empty() ? null_subst : last_one);
		return v;
	}

	void run() 
	{
		string path = "D://2.txt";
		fstream file(path);

		string line;
		while (getline(file, line))
		{