<aside> 💡 stringstream

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

using namespace std;

int main() {
	// ifstream
	ifstream in("file.txt");
	string word;
	while(in > word) { 
		cout << word << endl; 
	}
	// istringstream
	string data = "123 456";
	istringstream iss(data);
	int num1, num2;
  iss >> num1 >> num2;
  cout << num1 << num2 << endl;
	// ostringstream
	ostringstream oss;
	oss << "Hello " << "World";
	cout << oss.str() << endl;
	//stringstream
	stringstream ss;
	ss << "123 456";
	int num1, num2;
  iss >> num1 >> num2;
  cout << num1 << num2 << endl;
	cout << ss.str() << endl;
	return 0;
}

</aside>