( Help please! :) )I'm having trouble reassigning values to my class' parameters default values

when I execute this program, nothing is returned. Help please :)

Thank you!

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 #include <iostream>
using namespace std;

class Student{
	
	private: 
		string studentid;
		string firstn, lastn, midi;
		int mm,dd,yyyy;
		char gender;


	public:
		
		//Default Constructors 
		Student();
		Student(string firstn, string lastn, string midi, int mm, int dd, int yyyy);
		
		//Mutator Methods
			
		  //set methods
		void setMonth();
		void setDay();
		void setYear();
		void setName();
		void setGender();
		void setIDNumb();

		  //input and display methods
		void input();
		void display();
		
		//Accessor Methods 
		int getMonth();
		int getDay();
		int getYear();
		string getFirstN();
		string getMiddleN();
		string getLastN();
		char getGender();
		string getIDNumb();


};

//function definitions


	Student::Student(){


	firstn = "unnamed";
	lastn = "unnamed";
	midi = "unnamed";
	mm = 0;
	dd = 0;
	yyyy = 0;
	studentid = "unassigned";
	gender = 'U';

	}

	Student::Student(string firstn, string lastn, string midi, int mm, int dd, int yyyy){

	Student::firstn = firstn;
	Student::lastn = lastn;
	Student::midi = midi;
	Student::mm = mm;
	Student::dd = dd;
	Student::yyyy = yyyy;	
	Student::gender = gender;
	}

	void Student::setMonth(){
		int x;
		cout << "Please input the month of your birthdate: ";
		cin >> x; 	

			if( x < 1 || x > 12){
			cout << "Please input a valid month";
			cin >> x;
			}
			else{
			mm = x;
			}
	}

	void Student::setDay(){
		int x;
		cout << "Please input the day of your birthdate: ";
		cin >> x;

			if( x < 1 || x > 31){
			cout << "Please input a valid day";
			cin >> x;
			}
			else{
			x = dd;
			}
	}

	void Student::setYear(){
		int x;
		cout << "Please input the year of your birthdate: ";
		cin >> x;
		
			if( x < 0 || x > 2016){
                        cout << "Please input a valid year";
        		cin >> x; 
	               }
                        else{
                        x = yyyy;
                        }
	}

	void Student::setName(){

	cout << "Input your first name: "; cin >> firstn;
	cout << "Input your middle initial: "; cin >> midi;
	cout << "Input your last name: "; cin >> lastn;
	
	}

	void Student::setGender(){

	cout << "Please input your gender (M/F): "; cin >> gender; 

	}

	void Student::setIDNumb(){

	cout << "Please input your ID number: ";
	cin >> studentid; 

	}

	int Student::getMonth(){

	return mm;

	} 

	int Student::getDay(){
	
	return dd;

	}

	int Student::getYear(){
	
	return yyyy;

	}

	string Student::getFirstN(){
	
	return firstn;

	}

	string Student::getLastN(){

	return lastn;

	}

	string Student::getMiddleN(){
	
	return midi;

	}

	char Student::getGender(){
	
	return gender;

	}

	string Student::getIDNumb(){

	return studentid;

	}

	void Student::input(){
	cout << endl;	

	setMonth();
        setDay();
        setYear();
        setName();
        setGender();
        setIDNumb();

	}

	void Student::display(){
	cout << endl;
	
	cout << "Student's name: ";
	getFirstN(); getMiddleN(); getLastN();
	cout << endl;
	
	cout << "Student's gender: ";
	getGender();
	cout << endl;

	cout << "Student's birthdate: ";
	getMonth(); 
	cout << "/";
	getDay(); 
	cout << "/";
	getYear();
	cout << endl;

	cout << "Student's ID number: ";
	getIDNumb();
	cout << endl;
	

	}

//driver


int main(){

	Student a("John","Doe","F",1,1,1999);
	Student b;	

	a.display();
	b.input();
	b.display();

	}
Last edited on
cout << getFirstN() << ' ';
You need to cout << getGender or cout getMonth.


You can't just leave it as getGender or getMonth.

It the equivalent of writing

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cout << "Student's gender: ";
	'M'
	cout << endl;


when really you want

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cout << "Student's gender: ";
	cout << 'M';
	cout << endl;
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