Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Pointers to Objects
Passing and returning of objects is, though, not very efficient since it includes passing and returning a copy of the data members. This problem can be eliminated using pointers. Like other variables, objects of class can also have pointers. Declaring a pointer to an object of a certain class is same as declaring a pointer to a variable of any other data type. A pointer variable having the address of an object is said to be pointing to that object. Pointers to objects can be used to make a call by address or for dynamic memory allocation. Just like structure pointer, a pointer to an object also uses the arrow operator to access its members. Like pointers to other data types, a pointer to an object also has only one word of memory. It has to be made to point to an already existing object or allocated memory using the keyword 'new'.
e.g.
string str; // Object
string *sp; // Pointer to an object
sp = &str; // Assigns address of an existing object
sp = new string // Allocates memory with new.
A simple example of using pointers to objects is given below.
class player
{
public :
void getstats(void);
void showstats(void);
private :
char name[40];
int age;
int runs;
int tests;
float average;
float calcaverage(void);
};
void main()
player Sachin;
Sachin.getstats();
Sachin.showstats();
player *Dravid;
Dravid = new player;
Dravid->getstats();
Dravid->showstats();
}
Define order that local objects are destructed?
Yes. "Memory pools" are useful in many situations. The bad news is that I'll need to drag you through the mire of how it acts before we talk about all the uses. Firstly, recall
You are to develop a Clinic System. 1. Identify and briefly explain the objects, classes, methods and attributes for the Clinic System. 2. Draw a use case diagram to represen
Want a scraping program created Project Description: We need to hire a professional developer to scrape the site for information such as *product title *Product Price
C program to remove vowels in sentence : void main() { char str[100]; int n; printf("enter string\n");
Write a program to determine V c for a given value of time (t) #include stdio.h #include math.h void main() { char prompt; float vs,cr,t,vc; /* input time */
T o k e n : Tokens are small entities in a program. Example: identifiers, keywords, constants, operators, strings, etc. These tokens are used almost in same wa
how to create program in c that will system restart
The Conditional Expression Operator An alternate method to using a simple if-else construct is the conditional expressions operator, ?: A conditional expression operato
A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd