what is the diff b/n c and c++
a. dynamic scoping
b. nested switching
c. declaration of variables in any code block
d. separation of compilation and linking
int f() {
int I = 12;
int &r = I;
r += r / 4;
int *p = &r;
*p += r;
return I;
}
Referring to the sample code above, what is the return value
of the function "f()"?
a) 12
b) 15
c) 24
d) 17
e) 30
catch(exception &e)
{
. . .
}
Referring to the sample code above, which one of the
following lines of code produces a written description of
the type of exception that "e" refers to?
a) cout << e.type();
b) cout << e.name();
c) cout << typeid(e).name();
d) cout << e.what();
e) cout << e;
template<class T, class X> class Obj {
T my_t;
X my_x;
public:
Obj(T t, X x) : my_t(t), my_x(x) { }
};
Referring to the sample code above, which one of the
following is a valid conversion operator for the type T?
a) T operator T () { return my_t; }
b) T operator(T) const { return my_t; }
c) operator(T) { return my_t; }
d) T operator T (const Obj &obj) { return obj.my_t; }
e) operator T () const { return my_t; }
class X
{
public:
int x;
static void f(int z);
};
void X::f(int y) {x=y;}
What is the error in the sample code above?
a) The class X does not have any protected members.
b) The static member function f() accesses the non-static z.
c) The static member function f() accesses the non-static x.
d) The member function f() must return a value.
e) The class X does not have any private members.
The "virtual" specifier in a member function enables which
one of the following?
a) Monmorphism
b) Late binding
c) Metamorphism
d) Solomorphism
e) Inheritance
Which one of the following describes characteristics of
"protected" inheritance?
a) The base class has access only to the public or protected
members of the derived class.
b) The derived class has non-public, inheritable, access to
all but the private members of the base class.
c) The derived class has access to all members of the base
class.
d) The private members of the base class are visible within
the derived class.
e) Public members of the derived class are privately
accessible from the base class.
When is the last time you coded in C/C++? What is the most
lines of original C/C++ code you have personally written in
one project? How confident are you in your ability to write
C or C++ without a reference?
write a code for this. serial_number contained in the
header of the file will be read , if this serial number is
less than a previous serial number within a successfully
processed file, or is the same as another serial number
within a successfully processed file, or if the field
contains anything other than 7 digits, then the file must
error with the reason ‘Invalid SERIAL_NUMBER’.
sir plz send me a set of questions that been frequently
held in written examination during campus selection.
20
what is multithreading in c++ ,
what is difference between multithreading and
singlethreading.
3
design a c++ class for the chess board,provide a c++ class
definition for such class(only class definition is required)
71
Describe how to safeguard a system through acquisition of
an antivirus
Program and systematic backup.
41
Describe the My Computer and My Documents folders;
identify the elements that are present in every Window.
48
Write a program using GUI concept for the scheduling
algorithms in Operating system like SJF,FCFS etc..
10
please visit this site you'll find my question
this is my homework please answer it if you can
http://easyscience.org/ib/lofiversion/index.php/t36168.html
49
Question In a class, there is a reference or pointer of an
object of
another class embedded, and the memory is either allocated
or assigned to the new object created for this class. In
the constructor, parameters are passed to initialize the
data members and the embedded object reference to get
inialized. What measures or design change should be advised
for proper destruction and avioding memory leaks, getting
pointers dangling for the embedded object memory
allocation? Please suggest.
Question Submitted By :: Sunil Kumar
I also faced this Question!! Rank Answer Posted By
Re: In a class, there is a reference or pointer of an
object of another class embedded, and the memory is either
allocated or assigned to the new object created for this
class. In the constructor, parameters are passed to
initialize the data members and the embedded object
reference to get inialized. What measures or design change
should be advised for proper destruction and avioding
memory leaks, getting pointers dangling for the embedded
object memory allocation? Please suggest.
Answer
# 1 use copy constructors
0 Shanthila
There is something to be taken care in destructor, in copy
constructor, suppose the memory is assigned to the embedded
member object pointer with the parameter passed value, but
if some other objects of different class also are pointing
to this memory, then if some one deletes the object then
this class member pointer object will become dangling, or
if the object is not deleted properly then there will be
memory leak. Please suggest the design change required to
handle or avoid this situation
31
how can i access a direct (absolute, not the offset) memory
address?
here is what i tried:
wrote a program that ask's for an address from the user,
creates a FAR pointer to that adress and shows it. then the
user can increment/decrement the value in that address by
pressing p(inc+) and m(dec-).
NOW, i compiled that program and opened it twice (in 2
different windows) and gave twice the same address to it.
now look what happen - if i change the value in
one "window" of the program, it DOES NOT change in the
other! even if they point to the same address in the memory!
here is the code snippet:
//------------------------------------------------------
#include <stdio.h> //INCLUDE EVERY KNOWN HEADER FILE
#include <conio.h> //FOR ANY CASE...
#include <iostream.h>
#include <dos.h>
#include <process.h>
main()
{
int far *ptr; //FAR POINTER!!!
long address;
char key=0; //A KEY FROM THE KEYBOARD
int temp=0;
clrscr();
cout<<"Enter Address:";
cin>>hex>>address; //GETS THE ADDRESS
clrscr();
(long)ptr=address; temp=*ptr; //PUTS THE ADDRESS IN THE PTR
cout<<"["<<hex<<(unsigned long)ptr<<"]="<<*ptr<<" = "<<
(char)(*ptr);
//SHOWS: [address]=value=ASCII symbol.
while (key!=27) //WHILE YOU DONT PRESS ESC.
{
while(!kbhit()) //WHILE KEY IS NOT PRESSED
{
if (temp!=*ptr) { temp=*ptr; clrscr(); cout<<"["<<hex<<
(unsigned long)ptr<<"]="<<*ptr<<" = "<<(char)(*ptr); };
//IF THE VALUE HAS CHANGED, CLEAR THE SCREEN AND SHOW
//AGAIN
if (key=='p') {key=0; (*ptr)++; } //INCREMENT VALUE
if (key=='m') {key=0; (*ptr)--; } //DEC. VALUE
};
key=getch(); //IF A KEY IS PRESSED, READ IT FROM THE
//KEYBOARD
};
return 0; //IF ESC WAS THE KEY, EXIT THE PROGRAM
}
//---------------------------------------------------------
12
How to execute business logic for only once ..?even though
user clicks submit button multiple times by mistake..?
(i disabled JavaScript)
44
If P is the population on the first day of the year, B is
the birth rate, and D is the death rate, the estimated
population at the end of the year is given by the formula:
The population growth rate is given by the formula:
B – D
Write a program that prompts the user to enter the starting
population, birth and death rates, and n, the number of
years. The program should then calculate and print the
estimated population after n years. Your program must have
at least the following functions:
1. growthRate: This function takes its parameters the
birth and death rates, and it returns the population growth
rate.
2. estimatedPopulation: This function takes its
parameters the current population, population growth rate,
and n, the number of years. It returns the estimated
population after n years
Your program should not accept a negative birth rate,
negative death rate, or a population less than 2.
please answer my question ....
I am doing my BS.c MATHS CAN I ABLE TO JOIN IN NIIT?
5
i hav very low percentage in 12th n BSCwhich is around
50.......coz it was just imposed on me 2 b a science
graduate,nw m doin MCA n hav aggregate 74% ....what shud i
answer if company's HR ask me about dis much low previous
percentage??????
38
what's the difference between abstract class and concreate
class? what's the meaning of standard template library(STL)?
28
To modify an, existing worksheet. What steps are involved
for:
1. Inserting and deleting rows and columns.
2. Printing cell formulas 3Jld displayed values
3. Using the page setup command
To Refer this Site to Your Friends 
Site Map