Changing struct into class C++ -

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for homework assignment, supposed code struct collected information music albums. able easily. second part of assignment turn struct class, , i'm having trouble getting code compile. here 2 codes.

struct code:

#include <iostream> #include <vector> #include <string>  using namespace std;  struct date {     int month;     int day;     int year; };  struct album {     string name;     string artist;     vector <string> songs;     date release; };  void initializealbum(album& a); void initializesongs(vector <string> & songs); void printalbum(album a);  int main() {     album my_album;     initializealbum(my_album);     printalbum(my_album);     return 0; }   void initializealbum(album& a) {     cout << "enter album name:" << endl;     getline(cin, a.name);     cout << "enter artist name:" << endl;     getline(cin, a.artist);     cout << "enter release month (numeric format: ex. 06/10/1995):" << endl;     cin >> a.release.month;     cout << "enter release day:" << endl;     cin >> a.release.day;     cout << "enter release year:" << endl;     cin >> a.release.year;      initializesongs(a.songs); }  void initializesongs(vector <string> & songs) {     cout << "how many songs in album?" << endl;     int j = 0;     cin >> j;     string answer;     cout << "enter each song name 1 @ time:" << endl;         ( int y = 0; y <= j; y++)         {             getline (cin, answer);             songs.push_back(answer);         } }   void printalbum(album a) {     cout << "the album name " << a.name << endl;     cout << "the artist name " << a.artist << endl;     cout << "the release date " << a.release.day << "/" << a.release.month << "/" << a.release.year << endl;     cout << "the songs are:";     (int x = 0; x < a.songs.size(); x++ )         cout << "   " << a.songs[x] << endl; }

class code:

#include <iostream> #include <vector> #include <string>  using namespace std; struct date {     int month;     int day;     int year; };   class album {     public:         void printalbum();         void initializealbum();         string name;         string artist;         vector <string> songs;         date release;     private:         void initializesongs(); }; int main() {     album a;     a.initializealbum();     a.printalbum();     return 0; }  void album::initializealbum( ) {     cout << "enter album name:" << endl;     getline(cin, name);     cout << "enter artist name:" << endl;     getline(cin, artist);     cout << "enter release month (numeric format: ex. 06/10/1995):" << endl;     cin >> release.month;     cout << "enter release day:" << endl;     cin >> release.day;     cout << "enter release year:" << endl;     cin >> release.year;     initializesongs(songs); }  void album::initializesongs() {     cout << "how many songs in album?" << endl;     int j = 0;     cin >> j;     string answer;     cout << "enter each song name 1 @ time:" << endl;         ( int y = 0; y <= j; y++)         {             getline (cin, answer);             songs.push_back(answer);         } }   void album::printalbum() {     cout << "the album name " << name << endl;     cout << "the artist name " << artist << endl;     cout << "the release date " << release.day << "/" << release.month << "/" << release.year << endl;     cout << "the songs are:";     (int x = 0; x < songs.size(); x++ )         cout << "   " << songs[x] << endl; }

maybe line error: initializesongs(songs); in void album::initializealbum() function?

follow compiler messages.


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