What are the OOPS concepts?
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Answer Posted / abhradeep
Object is form of data abstraction so the OOP concepts will be as follows
1) Encapsulation (E.G Class)
2) Abstraction (E.G Object)
3) Polymorphism (e.g Overloading, overriding)
4) Inheritance (e.g Interface, Abstract Class)
5) Dynamic binding (e.g new keyword @ the runtime)
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i=20;k=0;
for(j=1;k-i;k+=j<10?4:3)
{
cout< This program numbers the lines found in a text file. Write a
program that reads text from a file and outputs each line
preceded by a line number. Print the line number
right-adjusted in a field of 3 spaces. Follow the line
number with a colon, then one space, then the text of the
line. You should get a character at a time and write code to
ignore leading blanks on each line. You may assume that the
lines are short enough to fit within a line on the screen.
Otherwise, allow default printer or screen output behavior
if the line is too long (i.e., wrap or truncate). A somewhat
harder version determines the number of spaces needed in the
field for the line numbers by counting lines before
processing the lines of the file. This version of the
program should insert a new line after the last complete
word that will fit within a 72-character line. What is the oops and benefits of oops programming? Can destructor be overloaded? 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 Can a destructor be called directly? What do you mean by abstraction? What are the 3 pillars of oop?
