c++ 实现读写文件

#include <fstream>
#include <iostream>
#include <string>

using namespace std;

int main()
{
	ofstream outfile;
	outfile.open("afile.dat",ios::out|ios::trunc);

	string data;
	for (int i = 0; i < 10;i++) {
		data = to_string(i);
		outfile << data << endl;
	}
	outfile.close();

	ifstream infile;
	infile.open("afile.dat",ios::in);
	while (!infile.eof()) {
		getline(infile,data);
		cout << data << endl;
	}

	infile.close();

	return 0;
}