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Tricky C Program
Write a C program to find a peculiar two digit number which is three times the sum of its digits.
paruchurimaheshgoud
- Aug 17th, 2011
Simple logic
Code- #include<iostream>
- using namespace std;
- int main()
- {
- int a,b,c,d;
- for(a=1;a<99;a++)
- {
- b=a%10;
- c=a/10;
- d=3*(b+c);
- if(d==a)
- cout<<"spl"<<a<<endl;
- }
- return 0;
- }
Rajath
- Aug 5th, 2011
The only peculiar two digit num is 27..
Code- #include<stdio.h>
- void main()
- {
- int i,j;
- for(i=1;i<9;i++)
- {
- for(j=1;j<9;j++)
- {
- if((10*i)+j==3*(i+j))
- {
- return;
- }
- }
- }
- return 0;
- }
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Pointer Use
Why do we use pointer instead of variable?
jbode
- Sep 30th, 2010
We *must* use pointers for the following:1. To fake pass-by-reference semantics;2. To track dynamically allocated memory;3. To build self-referential data structures.If we want a function to modify...
Cmkraj
- Sep 15th, 2010
List of pros & cons of pointers over variables1. Fetching speed is faster thru pointers as pointers directly access the memory2. Useful in the concepts of pass by reference. variable value can be chan...
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Pointer to an Array
What is pointer to an array? Explain with example.
jbode
- Oct 5th, 2010
For any given data type T, a pointer to an array of T is declared as "T (*arr)[N];". It has the same value as a pointer to the first element of the array, but a different type (T (*)[N...
anandkumarjha
- Aug 28th, 2010
Actually there does not exist array rather here is a term called pointer to an array.let me explain with the help of one example.suppose we have following code#include<stdio.h>#define i 10main()...
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Recursion
What is the basic principle behind recursion, other than function calling itself again & again and in which real time scenario we use it?
jbode
- Oct 4th, 2010
The basic idea behind recursion is that you're solving one big problem by breaking it into multiple smaller, easier-to-solve problems. This can make the algorithm easier to write and un...
anandkumarjha
- Aug 29th, 2010
Recursion is the process of calling function again and again.During the recursion many push and pop operation is done in our registers memory. That's why recursion has very poor performance.Our compu...
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Use of Static
What is the use of static in (public static void main string args[])
amrutabhavana
- Sep 4th, 2011
We can use static key word for any method which does not require an object to call, so main method is automatically called by the JVM so it does not require any object it is mentioned as static. We ca...
Suresh
- Aug 6th, 2011
Without creating instance of that class to invoke the main method static keyword is used, by giving the name of the class main method gets invoked.
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Object Class
When you declare a class, why does it automatically extends to object class? Give 2 reasons.
mani.sivapuram
- Mar 11th, 2011
When preparing the Java by JavaPeople they thought like every object what we prepare should have some common property so that we can do some basic operations like for example clone() method. So ...
anandkumarjha
- Aug 9th, 2010
Object class is the super class of all the classes provided by java.lang package. And I think you know that all the basic functions to write a program like println() are the content of the class...
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Bluetooth Modulation Processes
What kind of modulation processes are adopted in Bluetooth technology?
khaled
- Oct 28th, 2011
The modulation is FSK
anandkumarjha
- Aug 11th, 2010
Bluetooth uses FHSS (Frequency Hopping Spread Spectrum) technique which is used in spread spectrum signal transmission. To understand Frequency hoping spread spectrum, its is necessary to un...
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Difference between NTFS and FAT32?
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Editorial / Best Answer
Answered by: Aparna Patil
- Mar 24th, 2006
NTFS
1)allows access local to w2k,w2k3,XP,win NT4 with SP4 & later may get access for somefile.
2)Maximum size of partition is 2 Terabytes & more.
3)Maximum File size is upto 16TB.
4)File & folder Encryption is possible only in NTFS.
FAT 32
1)Fat 32 Allows access to win 95,98,win millenium,win2k,xp on local partition.
2)Maximum size of partition is upto 2 TB.
3)Maximum File size is upto 4 GB.
4)File & folder Encryption is not possible.
nigam
- Jun 2nd, 2015
FAT 1.it creats file allocated table. 2.dos support. 3.maximum size 32 gb. 4. convert fat to ntfs without data loss. 5.not support encryption, disk quota, compression. NTFS 1.create main file table. ...
Prashant
- Dec 10th, 2014
You cannot create a FAT32 volume larger than 32 GB
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Why is transient modifier used and where in real life?
Many people disturbed me about the solution,some one help me.
anandkumarjha
- Oct 3rd, 2010
Volatile modifier is being used in the field of multithreading because whenever all the threads access to a single variable ,they have their seperate copy of that variable and if they modifies the var...
Raja Chaithanya Bangaru
- Nov 11th, 2005
In Java, all objects are not serializable.In distibuted environment,an object needs to be serializable.(serialization means writing the state of an object to a file using output stream so that it pers...
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What is the difference between declaring a variable and defining a variable?
Declaring a variable means describing its type to the compiler but not allocating any space for it. Defining a variable means declaring it and also allocating space to hold the variable. You can also initialize a variable at the time it is defined.
anandkumarjha
- Aug 31st, 2010
As far as declaration of variable is concerned it only shows the properties of variable and we declare the data type which are to be used by that variable but when it comes to the definition of variab...
prabhu
- May 5th, 2007
Int num;This statement is declaration and also defination since it also allocates memory for variable num.But when you use following statementextern int num;It is only declaration since you are not allocating memory here.
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What is a const pointer?
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Editorial / Best Answer
Answered by: Prasad
- Apr 27th, 2007
Constant pointer is NOT pointer to constant. Constant pointer means the pointer is constant. For eg:
Constant Pointer
int * const ptr2 indicates that? ptr2 is a pointer which is constant. This means that ptr2 cannot be made to point to another integer. However the integer pointed by ptr2 can be changed.
Where as a Pointer to constant is
const int * ptr1 indicates that ptr1 is a pointer that points to a constant integer. The integer is constant and cannot be changed. However, the pointer ptr1 can be made to point to some other integer.Jegan Chakkravarthy
- Jan 7th, 2011
An ordinary pointer variable preceeded with the "const" modifier. This prevents the value initialised from getting changed.
anandkumarjha
- Aug 29th, 2010
Absolutely there is the vast difference between constant pointer and the pointer to a constant.it will be more clear with the examples of both the types.CONSTANT POINTER:-int const *a...this means the...
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Array is an lvalue or not?
An lvalue was defined as an expression to which a value can be assigned. Is an array an expression to which we can assign a value? The answer to this question is no, because an array is composed of several separate array elements that cannot be treated as a whole for assignment purposes. The following statement is therefore illegal: int x[5], y[5]; x = y; Additionally, you might want to copy the whole...
adarshjoshi
- May 12th, 2011
An object is a region of storage that can be examined and stored into. An lvalue is an expression that refers to such an object. An lvalue does not necessarily permit modification ...
jbode
- Nov 30th, 2010
Per the C Language Standard (hoping the posting software doesn't munge the following so that it's completely unreadable): ---------------------6.3.2.1 Lvalues, arrays, and function desig...
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When is a switch statement better than multiple if statements?
A switch statement is generally best to use when you have more than two conditional expressions based on a single variable of numeric type.
jaspreet grewal
- Oct 13th, 2011
Simply saying, IF-ELSE can have values based on constraints
where SWITCH can have values based on user choice.Jegan Chakkravarthy
- Jan 7th, 2011
Switch statements can be used when any one of the given alternatives are to be matched. In the sense, only when an equality operator is needed. Other relational operators can't be used in switch c...
