Reading multiple data types to file

If got a problem for reading multiple data types to a file using operator>> and getline.

Let say I've got the following code:

Code:

#include <iostream>
#include <string>
#include <fstream>
using namespace std;

int main()
{
	ofstream fout("testfile.txt");
	string s = "Writing multiple data types to a file", t, u;
	fout << s << '\n';
	int i = 2, j;
	fout << i << '\n';
	fout << s << '\n';
	fout.close();
	
	ifstream fin("testfile.txt");
	getline(fin, t);
	fin >> j;
	getline(fin, u);
	cout << t << endl << j << endl << u << endl;
	
	return 0;
}

The problem is that string u is emtpy and not the the content of s that it supposed to have.

fin >> j; does NOT consume a newline, so it instead gets read by the following getline.

Either
- don't mix input methods (like cin and getline)
- use cin.ignore() to skip unused (and unwanted) data.

Thanks for the information.