#include <sstream>
#include <iostream>
int main() {
std::istringstream f("line1\nline2\nline3");
std::string line;
while (std::getline(f, line)) {
std::cout << line << std::endl;
}
}
#include <sstream>
#include <iostream>
int main() {
std::istringstream f("line1\nline2\nline3");
std::string line;
while (std::getline(f, line)) {
std::cout << line << std::endl;
}
}