Why should you generally pass an object of the class to a friend function as a reference parameter?Choose one answer. a. if the friend function changes the values of the data member(s) b. if the friend function will not change the values of the data member(s) c. It is more efficient to pass the object by reference. d. A and B e. A and C

ishanaditya

 Profile Answers by ishanaditya Questions by ishanaditya

• Sep 1st, 2014

Lets just say you shouldn't seriously consider a company where you get asked this question :)

robertgbjones

 Profile Answers by robertgbjones Questions by robertgbjones

• Aug 5th, 2014

Friend-ness and reference vs value parameter semantics are completely disconnected issues. You use refernces if you want changes to the parameter to be visible at the call site, and use copy if not. I...

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cclass base
{
public:
virtual void display(int i = 10)
{
cout

rohit suri

• Sep 11th, 2014

Base class display method will called

reddy-

• Apr 10th, 2013

Overriding function default argument takes more precedence ,Hence based class default argument 10 will be initialized to i.So i value holds 10 will be printed for this call with derived count statement.

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While doing inheritance in C++, one thing that is not inherited is what?

rohit suri

• Sep 11th, 2014

There are four things which r not inherited in c++
1>Constructor
2>Destructor
3>Assignment operator
4>copy constructor
5>Friend function

Johnny

• Jan 7th, 2014

Friend declarations.

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Use of static and friend function in a class

Navnit kumar

• Sep 16th, 2014

What is difference between friend function and static function?

ajrobb

 Profile Answers by ajrobb Questions by ajrobb

• Sep 22nd, 2010

A static function is associated with the class and not an object. It has access to other static functions and variables in the class and it is a friend.A friend function is declared in a class but doe...

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Is it possible to create an interface in C++? If Yes, how?

Zeeshan Mohammad

• Dec 12th, 2014

I would prefer to write a structure and declare a function there for interface.

Code
 

Mohit

• Jul 31st, 2014

Yes you can do it by making a function with help of virtual keyword

Code
 

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What is Static Polymorphism? Give its syntax and simple example.

rdl

• Dec 28th, 2014

The call to a function is resolved at compile time. Eg., function overloading and templates.

Youssef Arbach

• Dec 12th, 2014

Static polymorphism could be seen also with Templates, since the selection of the write function is done at compile time. Usually with inheritance (and call-by ref sure) polymorphism is dynamic, unless it is a call by-value, then there would be no morphism at all.

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yunisha pandey

• Jan 14th, 2015

And what are the disadvantages of operator overloading???

Nisikant

 Profile Answers by Nisikant Questions by Nisikant

• Jan 30th, 2009

When the operator operates on the user defined data type or operands behaves same as it operates on inbuilt data type that mechanism is known as operator overloading. The operator that performs the sp...

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How can I write a program that convert a given number of millimeters into the equivalent length in meters and meters into the equivalent length in millimeters?Also draw flowchart,algorithm,output.

John

• Feb 15th, 2015

Code
span style="font-style: italic;">// 
"Invalid argument"//
// mm
" = ""m"// m
" = ""mm";
        }
}

Manish Kumar

• Jan 8th, 2015

Code
#include <iostream>
"1 for meter to mm and 2 for mm to meter. so enter your option.""It is meter to mm. Please enter the value""Your meter to mm is: ""It is mm to meter. Please enter the value""Your mm to meter is: "

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Write c++ program that read 10 numbers using while statement and print their sum, average, maximum and minimum ?

1-write c++ program that read 10 numbers and print their sum, average, maximum, and minimum.
2-write a program that finds all number, dividable by 3 or 4 ranges from 1 to n .
3- write a program to calculate n! where n! =n * (n-1) * (n-2) * ...*(2) * (1).

How can we access private members of classs?

sharmy

• Mar 1st, 2015

We can access the private members of the class using friend function

Nishikant

• Feb 25th, 2015

Typecost the object into int * and access the member in the same order they define.

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Sumit

• Mar 5th, 2015

Its mainly used to allocate memory in blocks

Manish Rai

• Nov 19th, 2014

1. it is used to allocate memory for an array. 2. it also sets allocated memory to 0 which malloc dont.

Code
span style="font-style: italic;">// where a sets to 0 // where a is uninitialized

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Write a program that continues to ask the user to enter any decimal number and calculate it’s binary,octal and hexadecimal equivalent.

Badugu

• Mar 11th, 2015

Please try following:

Code
#include<iostream>
#include<fstream>
#include <bitset>
"Enter a decimal Number:""Hexa Decimal:"<<std::hex<<i<<"     Octal:""Binary:""Enter a decimal Number:"

rohit suri

• Sep 11th, 2014

Code
 

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write a program that calculates and prints the bill for Viti Telephone Company. The company offers two types of services: regular and premium: its rate very depending on the type of service.

The rates are computed as follows:

Regular Service
$10.00 plus first 50 minutes are free.
Charges for over 50 minutes are $0.20 per minute

Premium Service

How we can run our c++ program without header files?

Eric Nantel

• Apr 23rd, 2015

Put everything in the only cpp containing main()

harshit

• Apr 14th, 2015

We can run c++ program without using header files by making the definition of all the functions and keywords in the programs

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Virtual destructors: If an object (with a non-virtual destructor) is destroyed explicitly by applying the delete operator to a base-class pointer to the object, the base-class destructor function (matching the pointer type) is called on the object.   There is a simple solution to this problem – declare a virtual base-class destructor. This makes all derived-class destructors virtual even...

Eric Nantel

• Apr 23rd, 2015

There is no virtual constructor !

Tausif

• Nov 29th, 2014

Constructor can be virtual function because constructor get invoked whenever an object is created, which take place at compile time. But in the case of virtual function binding takes place at the run time.

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mysterysource

• May 31st, 2015

If i am not wrong get() reads char by char and it does not read the blank spaces

anabarai

 Profile Answers by anabarai Questions by anabarai

• Jul 4th, 2011

get() extracts char by char from a stream and returns its value (casted to an integer) whereas getline() is used to get a line from a file line by line. Normally getline is used to filter out delimite...

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Public, protected and private are three access specifiers in C++. 1. Public data members and member functions are accessible outside the class.2. Protected data members and member functions are only available to derived classes.3. Private data members and member functions can’t be accessed outside the class. However there is an exception can be using friend classes.

ankit

• Jun 26th, 2015

Can we use protected specifier first than public than private in a class definition in c++ by making class

KomalUpadhyay

 Profile Answers by KomalUpadhyay Questions by KomalUpadhyay

• Nov 14th, 2009

Private Protected and Public all these are access specifiers.Private Data Members are only available inside classProtected Data Members are  only available inside class as well as in derived classes.Public Data members are available everywhere

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WAP to output the sum of positive numbers, sum of negative numbers, sum of even numbers,
sum of odd numbers from a list of numbers entered by the user. The list terminates when the
number entered is zero.

JOYJIT DEB

• Jul 19th, 2015

"cpp #include using namespace std; int main(){ signed int num; static unsigned int l_SumOfPos = 0; static signed int l_SumOfNeg = 0; static...

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Editorial / Best Answer

Answered by: Kranthi Kiran

• Dec 2nd, 2006

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We cannot use a 'static variable' declared in one file and use it in file 2.Reason: The purpose of 'static' keyword is to retain the value betwwen the function and to restrict thescope of the variable to the file.When a variable is declared as static it will be given memory in global area portion of the process segments with the variable mname prefixed with the file namefor Example: static int k; implies it is stored as "filename.k" in global segment.so if you try to use it in another file the compiler finds the variable prefix and flags out an error.

Vineet Srivastava

• Nov 13th, 2015

Syntatically you cannot as static is meant for one file access only. But still if you want - you can do it by passing it by reference to another file through some function.

shreekant

• Nov 5th, 2015

Nice explained by Kalayama "We cant have two storage specifiers for a single Variable declaration. If one needs to use the variable in multiple files, then he needs to declare it has extern." Its simple thing.

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