I am a slow learner so i would like to have answers that are simple in words but brief.

Bishoy

• Oct 20th, 2012

Local variables are stored in stack - each method have a stack frame (a fixed size of memory in the stack) that is allocated for local variables each time the method is called, and deallocated when th...

Ramanuj

• Oct 20th, 2012

Hi,

I have a query. The lifetime of the static variable is the entire program - if it is a local auto variable (i.e., not dynamically allocated), will it contribute to the peak memory ?

Regards,
Ramanu

Answer Question  Select Best Answer

k.raghu06

 Profile Answers by k.raghu06 Questions by k.raghu06

• Oct 30th, 2012

Yes, delay can be produced using the loops. but the delay cannt be same on all processors. That means, each processor shall have its own speed of executing an instruction. hence the execution speed in...

Answer Question  Select Best Answer

Write a program for four atrithmetic operations in matrix using operator overloading.

JoolsL

• Nov 19th, 2012

In both the above answers the op overloads should be using a const ref as input. You should have a (private) ctor that makes the matrix from the data, and should use RVO in the return.

binoy

• Aug 23rd, 2012

Code
#include<iostream.h>
#include<conio.h>
class matrix
{
  private:long m[5][5];
  int row;int col;
  public:void getdata();
  int operator ==(matrix);
  matrix operator+(matrix);
  matrix operator-(matrix);
  friend ostream & operator << (ostream &,matrix &);
};
/* function to check whether the order of matrix are same or not */
int matrix::operator==(matrix cm)
{
  if(row==cm.row && col==cm.col)
  {
    return 1;
  }
  return 0;
}
/* function to read data for matrix*/
void matrix::getdata()
{
  cout<<"enter the number of rows
";
  cin>>row;
  cout<<"enter the number of columns
";
  cin>>col;
  cout<<"enter the elements of the matrix
";
  for(int i=0;i<row;i++)
  {
    for(int j=0;j<col;j++)
    {
       cin>>m[i][j];
    }
  }
}
/* function to add two matrix */
matrix matrix::operator+(matrix am)
{
  matrix temp;
  for(int i=0;i<row;i++)
  {
    for(int j=0;j<col;j++)
    {
      temp.m[i][j]=m[i][j]+am.m[i][j];
    }
    temp.row=row;
    temp.col=col;
  }
  return temp;
}
/* function to subtract two matrix */
matrix matrix::operator-(matrix sm)
{
  matrix temp;
  for(int i=0;i<row;i++)
  {
    for(int j=0;j<col;j++)
    {
      temp.m[i][j]=m[i][j]-sm.m[i][j];
    }
    temp.row=row;
    temp.col=col;
  }
  return temp;
}
/* function to display the contents of the matrix */
ostream & operator <<(ostream &fout,matrix &d)
{
  for(int i=0;i<d.col;i++)
  {
    for(int j=0;j<d.col;j++)
    {
      fout<<d.m[i][j];
      cout<<" ";
    }
    cout<<endl;
  }
return fout;
}
/* main function */
void main()
{
  matrix m1,m2,m3,m4;
  clrscr();
  m1.getdata();
  m2.getdata();
  if(m1==m2)
  {
    m3=m1+m2;
    m4=m1-m2;
    cout<<"Addition of matrices
";
    cout<<"the result is
";
    cout<<m3;
    cout<<"subtraction of matrices
";
    cout<<"The result is 
";
    cout<<m4;
  }
  else
  {
    cout<<"order of the input matrices is not identical
";
  }
  getch();
}

Answer Question  Select Best Answer

SURESH KUMAR KOLLIMALLA

• May 10th, 2013

By using dangling pointer we can access the values at the deallocated memory here, in the below code the memory allocated for variable n will be dealloeated as and when the control transfers from func...

ishwar

• Oct 19th, 2011

Dangling pointers arise when an object is deleted or deallocated, without modifying the value of the pointer, so that the pointer still points to the memory location of the deallocated memory.

Answer Question  Select Best Answer

Abstraction is of the process of hiding unwanted details from the user. 

Ramya

• May 31st, 2013

Mechanism of exposing only the interface and hiding the implementation data from user.

mukrram ur rahman

• Dec 10th, 2012

Abstraction exactly involve the process of involving relevant things while ignoring the irrelevant things.

Answer Question  Select Best Answer

Packaging an object’s variables within its methods is called encapsulation.

Ramya

• May 31st, 2013

OOPs concept that binds the data along with function which manipulates the data.

sakshi

• Oct 4th, 2012

The wrapping up of data and code into a single entity is known as encapsulation.It is a way to implement data abstraction

Answer Question  Select Best Answer

Pooja

• Aug 26th, 2013

There are 6 main types of file opening mode: 1) "r". Open file for reading and file must exist; 2) "w" Open file for writing. If file does not exist it is created or if life already exist its ...

Answer Question  Select Best Answer

Which of the following statements accurately describe unary postfix operator++ overloading in C++?A. It can be overloaded with no parameters when the operator function is a class member.B. It can only be overloaded if the operator function is a class member.C. It can be overloaded with one parameter when the operator function is free standing function (not a class member).D. To overload it at least...

preethi

• Sep 14th, 2013

D

ajrobb

 Profile Answers by ajrobb Questions by ajrobb

• Sep 22nd, 2010

DA. It can be overloaded with no parameters when the operator function is a class member.No. As a class member it must have one dummy parameter:class A { A operator++(int); }; B. It can only be over...

Answer Question  Select Best Answer

Indu

• Sep 27th, 2013

As It uses the memory of the biggest size for all Variables, It overwrites the value.

Answer Question  Select Best Answer

harshitha

• Feb 8th, 2014

Ptr is a constant pointer to constant integer. Both the values cant be changed.
eg:
const int a=10;
const int *const ptr=&a;
int b=20;
const int *const ptr=&b;//error
a=25;//error

Jagadeesh Arikuti

• Jul 5th, 2012

Both are Constant
const int i=10;
const int * const ptr=&i;

You are not allowed to change int i are pointer ptr

Answer Question  Select Best Answer

harshitha

• Feb 7th, 2014

Calculate the sum of 1 to 100 i.e sum=(1+100)*(100/2)=5050

Code
int main()
{
      int sum=5050,res=0,temp=0,i;
      int str[200]={1,2,3.............99,100};
      for(i=0;i<100;i++)
      {
           res=res+str[i];
       }
       temp=sum-res;
       printf("missing number is %d
",temp);
       getch();
}      

std.approach

 Profile Answers by std.approach Questions by std.approach

• Jun 4th, 2013

Its simple.
1. do calculate the sum of numbers from 1 till 100. is about (1+100)*(100/2)=5050
2. iterate and summarize all elements of container (array).
3. each number is unique in the container, so the difference between 5050 and the sum (from point 2) gives us an answer.

Answer Question  Select Best Answer

Explain the resolution of a function by C ++ complier in the case of function overloading.

sandhya

• Feb 11th, 2014

Mangled names or name mangling

mn.balakumar

 Profile Answers by mn.balakumar Questions by mn.balakumar

• Aug 21st, 2010

By Name mangling

Answer Question  Select Best Answer

ramalakshmi

• Jun 14th, 2014

There are two types of polymorphism in c++:

1.) static polymorphism: operator and function overloading.
2.) dynamic polymorphism: virtual functions.

sharad chougale

• Apr 18th, 2014

There are two types polymorphism in c++
1) Function Overloading
2) Operater Overloading

Java polymorphism types
1) Method Overloading
2) Method Ovrriding

Answer Question  Select Best Answer

While executing a program in C++, it happens the black screen opens and closes automatically without displaying the output(program is correct). How to recover from this situation?

Amit

• Jun 27th, 2014

Use getchar() before return in the main.

sebius

• Aug 25th, 2013

Try this

Code
system("pause");

Answer Question  Select Best Answer

A program which includes account no.,user info,ID,PASS-WORD,user profile.

Write a program that takes an integer and displays the words number of that value. For example,
10->ten
121->one hundred twenty one

Subrata Laha

• Jul 25th, 2014

Please see the below code in Java"java import java.text.DecimalFormat; public class EnglishNumberToWords { private static final String[] tensNames = { "", " ten", "...

Answer Question  Select Best Answer

What is function linkage mechanism? Can inline function be used at run time? Why or why not?

sunil

• Jul 26th, 2014

Inline functions body are made to expand at compile time. So they are expanded at the time of compilation, since compiler decides whether the function is going to be inline or not.

std.approach

 Profile Answers by std.approach Questions by std.approach

• Jun 11th, 2013

This link may be helpful
http://www.exforsys.com/tutorials/c-plus-plus/inline-functions.html

Answer Question  Select Best Answer

robertgbjones

 Profile Answers by robertgbjones Questions by robertgbjones

• Aug 5th, 2014

As asked of course it just means how complex or complicated a piece of software is, but generally the term refers to the big-O performance of an algorithm. So for example, searching a string for a cha...

Subrata Laha

• Jul 25th, 2014

Programming complexity (or software complexity) is a term that encompasses numerous properties of a piece of software, all of which affect internal interactions.

Answer Question  Select Best Answer

ishanaditya

 Profile Answers by ishanaditya Questions by ishanaditya

• Sep 1st, 2014

There is nothing really wrong with C++ anymore. The few reservations I had personally have been fixed with the latest C++11 standard: - C++ wasnt really designed for writing multithreaded application...

robertgbjones

 Profile Answers by robertgbjones Questions by robertgbjones

• Aug 5th, 2014

Compared to what? C++ is a potentially low-level, close to the metal language, so potential for performance, though perhaps not as much as assembler, conversely its quite hard to learn, and now a big ...

Answer Question  Select Best Answer