public and private

hi,

i'm a newbie in C++. after going through a reference, i still can't understand how to get and set the variables on private. can someone please explain to me.(with an example will be good.)
thanks.

To have a private variable in a class, declare it after the "private:" part. To access it inside your class, just handle it as a normal variable. You cannot access it from outside your class, that's the whole purpose behind the private keyword.

here's an example:

Code:

---

class returnnumber
{
      private:
      float pi = 3.1428;
      public:
      int century = 100;
};

---

and you can put a lot of code in the middle if you want..

www.akilla.tk

You should always make data within the class private, never protected or public.

PHP Code:

---

class returnnumber
{
      private: 
      float pi = 3.1428;
      int x;
      public:
      int century = 100;
      returnnumber() {}   // default constructor
      returnnumber(z) {setX(z)}   // overidden constructor
      void setX(int y) {x = y;} 
      int getX() {return x;};
};

int main()
{
     returnnumber a;   // declares object named a of class
                        // returnnumber, but value of x in a is undefined
     returnnumber(10) b;   // declares object named b of class 
                      // returnnumber with value of 10 in x
     a.setX(5);   // x now = 5 


---

class myclass{
int i,j; /*these are the private variables or functions */
public: //after here goes the public variables

int age(); //these are public variables or functions
int speed();
}];