I have to write five unit tests and im getting quite a few errors

[yin]

I'm required to write 5 unit tests. I'm getting several errors. Can someone please fix class test so I know how to go about writing these tests?

#include <iostream>
using namespace std;
#include <fstream>
#include <string>

class user {
	public:
		char choice1;		
		string newpass;
		fstream usernames;
		fstream pswd;
		fstream npswd;
		fstream rnusernames;
		fstream rnpass;
		fstream rmaide;
};

class olduser : public user {
	private:
	string temp;
	string temp1;
	string temp2;
	string username;
	string userpass;
	string newuserpass;
	string loginyn;
	string mynewpass;

	public:
		int checkusername(){
		usernames.open("names.txt");
		cout << "\nplease enter your username   ";
		cin >> username; 
		while ((usernames >> temp)) { 
			if (temp.compare(username) == 0) {
				//cout << "found";
				usernames.close();
				return 1;
			}
		}
		usernames.close();
		return 0;
		}
		int checkpassword(){
		cout<<"please enter your password   ";
		cin>>userpass;
		pswd.open("pass.txt");
			while (pswd >> temp1) { 
				if (temp1.compare(userpass) == 0){
					cout<<"\n[ "<<username<<" ] having password [ "<<userpass<<" ] has been found in the database.\n\n";
					pswd.close();
					return 1;
				}
			}
		pswd.close();
		return 0;
		}
		int checknewpassword(){
		cout<<"please enter your password   ";
		cin>>newuserpass;
		npswd.open("newpass.txt");
			while (npswd >> temp2) { 
				if (temp2.compare(newuserpass) == 0){
					cout<<"Congratulations!!! You have successfully logged in with your new password.";
					npswd.close();
					return 1;
				}
				else{
					cout<<"ACCESS DENIED";
				}
			}
		npswd.close();
		return 0;
		}
		int creatnewpass(){
		cout<<"Password: ";
		cin>>mynewpass;
		npswd.open("newpass.txt");
		npswd<<mynewpass;
		npswd.close();
			cout<<"\nLogin now? (y/n) ";
		cin>>loginyn;
			if(loginyn=="y"){
				cout<<"\n        [LOGIN PROCESS STARTING...]\n";
				checkusername();
				checknewpassword();
			}
		return 0;
		}
		private:
};

class newuser :  public user {
	private:
	string nusername;
	string rpass;
	string maiden;

	public:
		void askusername(){
			cout<<"\nUsername: ";
			cin>>nusername;
			rnusernames.open("newnames.txt");
			rnusernames<<nusername;
			rnusernames.close();
		}

		void askuserpass(){
			cout<<"Password: ";
			cin>>rpass;
			rnpass.open("newpass.txt");
			rnpass<<rpass;
			rnpass.close();
		}

		void askMMN(){
			cout<<"Mother's maiden name: ";
			cin>>maiden;
			rmaide.open("maidennames.txt");
			rmaide<<maiden;
			rmaide.close();
		}
};



class test{
	public:
		user u; 
		newuser r;
		u.choice1 = "y";
		r.nusername = "name";
		r.rnpass = "pass";
		r.maiden="maiden";
};
/*
class test1{
	public:
		user u; 
		olduser verify;
		u.choice1 = "n";
		success=0;
};

class test2{
	public:
		user u; 
		olduser verify;
		u.choice1 = "n";
		success = 1;
};

class test3{
	public:
		user u; 
		olduser verify;
		u.choice1 = "x";
};
*/


int main() {
test t;
newuser r;
user u;   
olduser verify; 
int attempts, success;
cout<<"\nAre you a new user? (y/n) ";
cin>>u.choice1;
	if (u.choice1 == 'n'){
		for (attempts = 1; attempts < 4; attempts++){
			success = verify.checkusername();
				if (success == 1) { 
					break; 
				}
			}
		if (success == 0){
			cout<<"\nACCESS DENIED\n";
			cin.ignore();
			abort();
		}
		verify.checkpassword();
		cout<<"would you like to create a new password? (y/n) ";
		cin>>u.newpass;
			if (u.newpass=="y"){
				verify.creatnewpass();
			}
			else if (u.newpass=="n"){
				cin.ignore();
				abort();
			}
	}
	else if (u.choice1 == 'y'){
		r.askusername();
		r.askuserpass();
		r.askMMN();
		test();
		cin.ignore();
		abort();
	}
	else {
		cout<<"Error";
	}
return 0;
}

[thmm]

line 131 -> use single quotes for a char
line 132-134 -> you can't access private variables in a class

[yin]

i've already tried that. For more information these are the errors:

[cquery] unknown type name 'r'
[cquery] unknown type name 'u'
[cquery] expected member name or ';' after declaration specifiers

[markyrocks]

For private variables you have to write "getters and setters" bc they can't be accessed by anything outside of class methods. To created class objects they don't exist.

class test {

private: string name;

public:
	   test()
		   :name(){}

	   string getName() { return name; }

	   void setName(string n) { name = n; }


};


int main() {

	test t;

	t.setName("namey");

	cout << t.getName();
}

[TheToaster]

131-134
You can't access the members of a class instance outside of the scope of a function. It's like having a "std::cout <<" call in the global scope.