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It possible to inherit the private member in drived class?
SomGollakota
- Jun 13th, 2007
Inheritance is one thing, access is quite another. For a C++ class,1. Private members - are off limites to everyone except the ones that are declared in one way or the other, inside the class (direct ...
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How to create an object for a class that hasa constructor defined under privete access specifier
Prasad2008
- Jun 10th, 2008
There was little error in the code in my previous answer. We have to define a public static member function for this purpose. Here is the codeclass sample{sample* p;sample();public:static s...
Prasad2008
- Jun 10th, 2008
We have to define a public static member function for this purposeclass sample{sample* p;sample();public:static sample genObject();};sample* sample::genObject(){p=new sample;return p;}void main(){sample *p1=sample::genObject();}
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Hey anybody help me to write code for this programwap which display year,month & day presents in a year for eg.1. no. is 14 print 2 weeks2. no is 90 print 3 months3. no is 365 print 1 yearuser can input any no
chiyuwang
- Jun 20th, 2008
#include <iostream>using namespace std;void CalculateDate(const unsigned int _date);int _tmain(int argc, _TCHAR* argv[]){ unsigned int date; cout<<"...
swetha76
- Sep 27th, 2006
int rem_yr=0,yr=0, n,rem_mon=0,mon=0,rem=0,wek=0;printf(" enter a numbern");scanf("%d",&n); if(n>=365) { yr = n/365; rem_yr =n%365; &n...
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CPP Objects
How are objects passed in CPP?
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What is psychic windows in relation to VC++?
this question is related to windows programming using VC++
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What is virtual class and friend class?
Friend classes are used when two or more classes are designed to work together and need access to each other's implementation in ways that the rest of the world shouldn't be allowed to have. In other words, they help keep private things private. For instance, it may be desirable for class DatabaseCursor to have more privilege to the internals of class Database than main() has.
sivakumar.v
- Jul 3rd, 2008
Virtual class :: It is an inner class which can be overriden by the derived classes.
SomGollakota
- May 25th, 2008
Answering amarendra.moharana's question.Amarendra, My apologies that it took so long to answer your question. Haven't logged in for quite a while.In class D of your example, you will still hav...
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What happens to the member function in the class when copy constructor is invoked?
sivakumar.v
- Jul 3rd, 2008
Well, the basic answer is not possible to call copy constructor explicitly within a function again. Because, in the member function it tries to shadow the parameter which is defined at the caller side. Hence, we cannot invoke copy constructor inside a function.
bishoy
- Jan 10th, 2008
Member functions, not as a lot of people expect; have only one instance loaded in memory when the program is run. All constructors included copy constructor target loading member variable, but member functions have their single instances always loaded in memory and ready to be called.
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Method Overriding
What's the Method Overriding and what's the difference between Method Overloading and Method Overriding.
arun_goel3
- Jul 15th, 2008
Defining a new function with same name but signature is different is known as method oveloading.Define a new function with same name ( as in base class) in derived class is known as method override. In the derived class, base class defined method is hide.
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What is the dangling pointer in c++
jaihind007
- Jul 15th, 2008
Dangling pointer leads the memory leak problems. The following circumstances are memory leak ( dangling pointers ), not for good programming practice , try to avoid1) Try to avoid the empty object poi...
Ashwan
- Jul 26th, 2007
Dangling Pointer is a pointer pointing to either unallocated memory area or to the area that has already been freed. In simple words, Dangling pointer is the one that points no-where.
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Advantages of using Pointer
jaihind007
- Jul 15th, 2008
Advantages:* Increasing the programming performance , Using pointers we can able to access the variables faster* Dynamic memory management * Data structure handling (Linkedlist, Stack ,Queue, Data dictionary,....)* File management using FILE pointer
wanttochange
- Jan 10th, 2008
u want advantage 1)can return more then 1 value from a function2)no need to pass the entire object to a function..can pass just the address3)if we want our object to be modify by some function th...
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Auto Pointer
What is auto pointer ? What is the use of this ?
jaihind007
- Jul 15th, 2008
Auto pointer is nothing but, Proper memory management ( memory Allocation and deallocation).In C++ there is class template "auto_ptr" this is good example for auto pointer. Only we need to a...
vamsip
- May 6th, 2008
1. using printf scanf("%c",&ele); //read charecter printf("ascii= %d",ele); //print it acsii value
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If a function takes a pointer to a pointer as a parameter, how would you return a new pointer?
Kaushik_khatua
- Jul 22nd, 2008
*testValue = cObj;Dereferencing a double pointer once gives the memory location of the pointer which we need to update.
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Linking socket++ classes to my application
Hi,Iam very much new to programming and C++please help meI have an application that uses socket++ classes on Unix (AIX) environmentI have included #include in two of my .cpp filesand I have socket++ source in my temp directorywhen iam trying to compile my application using the makefile, the error shown is The #include file "sockinet.h" is not found.I don't know how to make my application to use socket++...
rocky2583
- Jul 19th, 2008
hi,Does the environment variable PATH contain the path of the folder in which the header files are present??If not, then either modify the PATH variable, or use -I option to specify the location of he...
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What is difference between malloc() and calloc() ?
paul.anuj
- Aug 5th, 2008
malloc() and calloc() both are use to allocate memory.malloc takes only one argument that is number of memory bytes, mostly we use sizeof() operator, which allocates the memory of that? number of byt...
baseersd
- Sep 18th, 2007
1) malloc() does not initialize the memory allocated. Hence garbage will be present calloc() initializes the allocated memory with 0.2) malloc() requires 2 arguments in the form of (...
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VTable is same for all objects of class. That means it is stored in memory . Can we obtain the address of VTable without creating any object of class?
jwent
- Aug 14th, 2008
Each instance of a class has its own vtable. Its not a predefined place in memory.
wael.salman
- Jul 30th, 2008
When an object is created, a pointer to this vtable, called the virtual table pointer or vpointer, is added as a hidden member of this object (often the first member). The compiler also generates &quo...
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Supplementary problem
you are tasked by your teacher to help her in the computation of your grade for preliminary period. the grade will computed based on the following formula.CRA=summation of all the quizzes, recitation,board works,assignments,and other requirements.prelim grade= (Cra*2+major exam)*60+40(total CRA)*2+major examthe program will return a letter grade based on the given conditionsletter grade score...
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How do you calculate mode from an array of integers?
OSaienni
- Sep 11th, 2008
Same as above except using arrays. #include <iostream>#include <algorithm>int main() {int arrNums[] = {1,2,4,5,1,3,4,2,3,4}; //find mode average, mode average is most frequently appearing ...
OSaienni
- Sep 11th, 2008
Below is an example program I wrote to find mode average. Mode average is the most frequently occuring number in a set. I haven't handle the case when there are 2 or more values with the same coun...
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The company pays a sales person on a commission basis. The sales person receives $200 per week plus 9 % of their gross salary for that week. For ex. if sales person who grosses 5000$ then he paid $650($200+$450). Write a prog in C++ (using array of counter) that determine how many of the sales person earned salaries in each of following ranges (assume that each sales person salary is truncated to an integer amount) :a. $200-$299 b. $300-$399 so on..i. $1000 and over
google_ever
- Oct 21st, 2008
Int a[8]= {0,0,0,0,0,0,0,0};int b[n]; // Here b is the array of employee's salaries.for(int iLooper=0; iLooper<n; iLooper++) iIndex = ((int)b[iLooper]/100) > 10) ? 8:((int)b[iLooper]/100)-2;a[iIndex]++;
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What is difference between followin intialization.int iVar1;int iVar2 = int();and which one of two should we prefer always and why?
mucdull
- Nov 17th, 2008
int iVar1; // iVar1 is never initializedint iVar2 = int(); // iVar2 will always be initialized with some initial valueThe latter should be used becaus...
Anil
- May 21st, 2007
Dependsif use in main both will get initialize to '0'.ie: global if use inside a function (local) iVar1 will be garbage, iVar2 will be initialised to '0';
C++ Interview Questions
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