*struct members are public by default
*class members are private by default
*both can have
	-constructors
	-destructors
	-member variables
	-member function
*often use structs for data, use classes for objects
-----------------------------------
#include<iostream.h>
int main()
{
	struct personaldata
	{
		char *firstname;
		char *lastname;
		char *birthday; // in the format of MM/DD/YYYY
		int phonenum;
	};
	personaldata personone; // declaring variable of type personaldata

	//populate personone with data
	personone.firstname = "John";
	personone.lastname = "Doe";
	personone.birthday = "12/30/1978";
	personone.phonenum = 5855555;

	//print the data out
	cout <<"First name :" << personone.firstname << endl;
	cout <<"Last name :" << personone.lastname << endl;
	cout <<"DOB :" << personone.birthday << endl;
	cout <<"phone number :" << personone.phonenum << endl;

	
	return 0;
}
-------------------------------------
#include<iostream.h>
class crectangle
{
	int x, y; //data member
public:
	void set_values (int, int); //member function
	int area (void)
	{
		return (x*y);
	}
};
void crectangle::set_values(int a, int b) /*::scope operator, specify the 
						class to which  the member being 
						declared belongs to. this  is also 
						an assignment.*/
{
	x=a;
	y=b;
}
int main()
{
	crectangle rect, rectb;// declares rect as an object
	rect.set_values(3,4);// assigns values to rect
	rectb.set_values(2,3);
	cout <<"Area :"<< rect.area() << endl;// outputs result
	cout <<"Area :"<< rectb.area() << endl;
	return 0;
}
--------------------------------------
#include<iostream.h>
#include<iomanip.h>
class date
{
private:
	int month;
	int day;
	int year;
public:
	date(int = 7, int = 4, int = 2001);//a member function - constructor

	void setdate(int,int,int);//a member function
	void showdate();
};
date::date(int mm, int dd, int yyyy)//constructor that intitializes
{
	month = mm;
	day = dd;
	year = yyyy;
	return;
}
void date::showdate()//displays
{
	cout << "The date is ";
	cout << setfill('0')//ensures values correspond to the conventional dates
		<< setw(2) << month <<'/' << setw(2) << day << '/' << setw(2) << year % 100 // extract the last two digits
		<< endl;
	return;
}
int main()
{
	date a, b, c(4, 1, 1998); //declares 3 objects
	b.setdate(12,25,2002);//assigns values to b data
	a.showdate();
	b.showdate();
	c.showdate();
	return 0;
}
---------------------------------------------------

char word[10];
char word2[10];
strcpy(word, "Maggie");
strcpy(word2, "Bad");
int len=strlen(word);
cout << len << endl;