#include <iostream>
#include <string>
#include <vector>
#include <sstream>
/**
* Splits a string by newline characters ('\n') into a collection of lines.
*
* @param str The input string to be split (passed by const reference to avoid copies).
* @return A std::vector<std::string> containing each individual line.
*/
std::vector<std::string> splitByNewline(const std::string& str) {
std::vector<std::string> lines;
std::stringstream ss(str);
std::string current_line;
// std::getline reads from the stream until it hits a newline ('\n') by default.
// It safely handles empty lines and correctly terminates at the end of the string.
while (std::getline(ss, current_line)) {
lines.push_back(current_line);
}
return lines;
}
int main() {
// Input text containing multiple lines
std::string multiline_text = "Hello world!\nThis is line two.\n\nFinal line here.";
// Call the splitting function
std::vector<std::string> result = multiline_text.empty() ?
std::vector<std::string>() : splitByNewline(multiline_text);
// Print out the parsed lines
for (size_t i = 0; i < result.size(); ++i) {
std::cout << "Line " << (i + 1) << ": " << result[i] << '\n';
}
}
/*
run:
Line 1: Hello world!
Line 2: This is line two.
Line 3:
Line 4: Final line here.
*/
