In C++ Plz and In What Order Do I Put It In. LAB: Playlist (output linked list) Given main(), complete the SongNode class to include the function PrintSongInfo(). Then write the PrintPlaylist() function in main.cpp to print all songs in the playlist. DO NOT print the dummy head node. Ex: If the input is: the output is: main.cpp Default Code: #include <iostream> #include "SongNode.h" // TODO: Write PrintPlaylist() function int main() { SongNode* headNode; SongNode* currNode; SongNode* lastNode; string songTitle; string songLength; string songArtist; // Front of nodes list headNode = new SongNode(); lastNode = headNode; // Read user input until -1 entered getline(cin, songTitle); while (songTitle != "-1") { getline(cin, songLength); getline(cin, songArtist); currNode = new SongNode(songTitle, songLength, songArtist); lastNode->InsertAfter(currNode); lastNode = currNode; getline(cin, songTitle); } // Print linked list cout << "LIST OF SONGS" << endl; cout << "-------------" << endl; PrintPlaylist(headNode); return 0; } SongNode.h Default Code: #include "iostream" #include <string> using namespace std; class SongNode { private: string songTitle; string songLength; string songArtist; SongNode* nextNodeRef; // Reference to the next node public: SongNode() { songTitle = ""; songLength = ""; songArtist = ""; nextNodeRef = NULL; } // Constructor SongNode(string songTitleInit, string songLengthInit, string songArtistInit); // Constructor SongNode(string songTitleInit, string songLengthInit, string songArtistInit, SongNode* nextLoc); // insertAfter void InsertAfter(SongNode* nodeLoc); // Get location pointed by nextNodeRef SongNode* GetNext(); // Prints song information void PrintSongInfo(); }; SongNode.cpp Default Code: #include "SongNode.h" // Constructor SongNode::SongNode(string songTitleInit, string songLengthInit, string songArtistInit) { this->songTitle = songTitleInit; this->songLength = songLengthInit; this->songArtist = songArtistInit; this->nextNodeRef = NULL; } // Constructor SongNode::SongNode(string songTitleInit, string songLengthInit, string songArtistInit, SongNode* nextLoc) { this->songTitle = songTitleInit; this->songLength = songLengthInit; this->songArtist = songArtistInit; this->nextNodeRef = nextLoc; } // insertAfter void SongNode::InsertAfter(SongNode* nodeLoc) { SongNode* tmpNext; tmpNext = this->nextNodeRef; this->nextNodeRef = nodeLoc; nodeLoc->nextNodeRef = tmpNext; } // Get location pointed by nextNodeRef SongNode* SongNode::GetNext() { return this->nextNodeRef; } // TODO: Write PrintSongInfo() function .