ALLInterview.com :: Home Page            
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
   Refer this Site  Refer This Site to Your Friends  Site Map  Bookmark this Site  Set it as your HomePage  Contact Us     Login  |  Sign Up                      
Google
   
 
Categories >> Software >> Programming Languages >> C
 
 


 

 
 C interview questions  C Interview Questions (2266)
 C++ interview questions  C++ Interview Questions (1121)
 VC++ interview questions  VC++ Interview Questions (342)
 Delphi interview questions  Delphi Interview Questions (510)
 Programming Languages AllOther interview questions  Programming Languages AllOther Interview Questions (652)
Question
what is const volatile?
 Question Submitted By :: C
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Voliatile means value can be changed at any point .when we
say cont volatile it says value cant be changed by the
programer but can be changed by the hardware ..
for example status register of any hardware ..
its volatile since value of this register can changed at any
time and its const too since its not changed by the programmer.
 
Is This Answer Correct ?    7 Yes 1 No
Test
 
Answer
# 2
read-only data which should not be optimized by compiler
because it might be modified by some ways unknown by
compiler.(ex: HW, or even by other thread if we have const
volatile int *p for example, where p is the address of some
variable which is not const).
 
Is This Answer Correct ?    0 Yes 0 No
N
 
 
 

 
 
 
Other C Interview Questions
 
  Question Asked @ Answers
 
without using arithmatic operator convert an intger variable x into x+1   3
Why doesn't C have nested functions?   2
What is the value of y in the following code? x=7;y=0; if(x=6) y=7; else y=1; TCS 12
swap two integer variables without using a third temporary variable? Persistent 5
what are bitwise shift operators?   4
for example user gives input as " 20 or 20.0 or rs 20.0 or 20.00 or rs20 and so .. on " and the output should be stored as " rs.20.00 " in a variable   2
Given an array of length N containing integers between 1 and N, determine if it contains any duplicates. SilverKey 3
how do u find out the number of 1's in the binary representation of a decimal number without converting it into binary(i mean without dividing by 2 and finding out the remainder)? three lines of c code s there it seems...can anyone help   5
what does exit() do? Cadence 3
m=++i&&++j(||)k++ printf("%d"i,j,k,m) ABC 1
If input is 123 then how to print 100 and 20 and 3 seperately?   4
what is output of the following statetment?Printf(%x, -1<<4); ?   5
 
For more C Interview Questions Click Here 
 
 
 
 
 


   
Copyright Policy  |  Terms of Service  |  Articles  |  Site Map  |  RSS Site Map  |  Contact Us
   
Copyright 2013  ALLInterview.com.  All Rights Reserved.

ALLInterview.com   ::  KalAajKal.com