function was not declared in this scope. What am I missing? - c++

Question

my functions output_all, add_item, and remove_item are all getting this error from the main.cc file. What am I missing? I assumed this was pretty straight forward, but obviously I messed it up. I'll include my files below. Thank you in advance for any help!
main.cc
#include <iostream>
#include <string>
#include <cstdlib>
#include "basket.h"
using namespace std;
int main(){
int choice;
string item;
cout << "Would you like to: \n\n 1.See List \n 2.Add an Item \n 3.Remove an item \n 4.Exit \n\n Please Enter a number: ";
cin >> choice;
if (choice == 1){
output_all(cout);
}
else if (choice == 2){
cout << "Please enter the item you would like to add to the list: ";
cin >> item;
add_item(item);
}
else if (choice == 3){
cout << "Please enter the name of the item you would like to remove: ";
cin >> item;
remove_item(item);
}
else if (choice == 4){
exit(1);
}
else {
main();
}
return (0);
}
basket.h
#include <iostream>
#include <string>
using namespace std;
class basket{
public:
//function will output all of the items currently in the list
void output_all(ostream& fout);
//Function will allow user to add item to list
void add_item(const string& item);
//function will remove item from list after checking that item exists in the list
void remove_item(const string& item);
// accessor method to access the string name
string get_name();
private:
//string variable used for storing thr list
string name;
};
basket.cc
#include <iostream>
#include <string>
#include "basket.h"
using namespace std;
void basket::output_all(ostream& fout){
fout << name;
}
void basket::add_item(const string& item){
name = name + " " + item;
}
void basket::remove_item(const string& item){
int num = name.find(item);
name.erase(num, item.length());
}
string basket::get_name(){
return (name);
}

Answer 1

I can see output_all(), add_item(), remove_item() are non static member of basket class. So output_all(cout) should be called from an object like: basketObj.output_all(cout);

Answer 2

Well, you are calling functions like output_all, add_item, remove_item in your main. There's no such functions in your program. Hence the [obvious] error.
If you tried to call member functions of class basket, then you should have declared an object of type basket and used a completely different syntax (member access syntax). Your favorite C++ book will have plenty of explanations and examples of this.
BTW, it is illegal to manually call main function in C++. You have to learn to use cycles to achieve what you are trying to do with that recursive call to main.