How to read this type of name in file i/o c++

[Brjdyxter]

Recently i have learnt how to read file and store data to the class in c++.
But there a harder exercise that i have no idea to do.

Here are the text file

Id name point
1 tran van an 5 6 7
2 tran bao 9 9 9
3 nguyen tran gia bao 8 9 4
4 bao 5 7 8

How to read name which length is random like this, i only know how to handle name variable with same length.

[Handy Andy]

Hello Brjdyxter,

What have you do so far and can you post it, i.e., code.

Is the input file fixed or do you have the ability to change it?

Andy

[seeplus]

A simple way to do this could be:

#include <fstream>
#include <iostream>
#include <string>
#include <cctype>
#include <vector>

struct Record {
	int id;
	std::string name;
	int point[3];
};

std::istream& operator>>(std::istream& is, Record& r)
{
	is >> r.id;
	r.name.clear();

	std::string line;

	for (; (is >> line) && !isdigit(line[0]); r.name += line + ' ');

	if (is) {
		r.name.resize(r.name.size() - 1);
		r.point[0] = std::stoi(line);
		is >> r.point[1] >> r.point[2];
	}

	return is;
}

int main()
{
	std::ifstream ifs("harder.txt");

	if (!ifs.is_open())
		return (std::cout << "Cannot open file\n"), 1;

	std::string line;
	std::vector<Record> recs;

	std::getline(ifs, line);	//Skip over header

	for (Record r; ifs >> r; recs.push_back(r));

	for (const auto& r : recs)
		std::cout << r.name << '\n';
}

Given the sample input file in the first post, displays:

tran van an
tran bao
nguyen tran gia bao
bao