All Easy Articles

ASCII NULL, ASCII 0 (‘0’) and Numeric literal 0

The ASCII (American Standard Code for Information Interchange) NULL and zero are represented as 0x00 and 0x30 respectively. An ASCII NULL character serves as a… Read More

ASCII

C++

Programming

Use of realloc()

Size of dynamically allocated memory can be changed by using realloc(). As per the C99 standard: void *realloc(void *ptr, size_t size); realloc deallocates the old… Read More

C-Dynamic Memory Allocation

C Language

Sorted order printing of a given array that represents a BST

Given an array that stores a complete Binary Search Tree, write a function that efficiently prints the given array in ascending order. For example, given an… Read More

Binary Search Tree

DSA

Comparison of Exception Handling in C++ and Java

Both languages use to try, catch and throw keywords for exception handling, and their meaning is also the same in both languages. Following are the… Read More

cpp-exception

Java-Exceptions

C++

Difference Between

Java

Shadowing of static functions in Java

In Java, if the name of a derived class static function is the same as a base class static function then the base class static… Read More

Java

Find the Minimum length Unsorted Subarray, sorting which makes the complete array sorted

Given an unsorted array arr[0..n-1] of size n, find the minimum length subarray arr[s..e] such that sorting this subarray makes the whole array sorted. Examples: If… Read More

Arrays

DSA

Sorting

Increment (Decrement) operators require L-value Expression

What will be the output of the following program? #include<stdio.h> int main() { int i = 10; printf("%d", ++(-i)); return 0; } A) 11 B)… Read More

C-Operators

C Language

C++

Templates and Static variables in C++

Function templates and static variables: Each instantiation of function template has its own copy of local static variables. For example, in the following program there… Read More

C++

Stack Unwinding in C++

Stack Unwinding is the process of removing function entries from function call stack at run time. The local objects are destroyed in reverse order in… Read More

C++-Exception Handling

C++

Catching Base and Derived Classes as Exceptions in C++ and Java

An Exception is an unwanted error or hurdle that a program throws while compiling. There are various methods to handle an exception which is termed… Read More

C++

Java

Precedence of postfix ++ and prefix ++ in C/C++

In C/C++, precedence of Prefix ++ (or Prefix –) has same priority than dereference (*) operator, and precedence of Postfix ++ (or Postfix –) is… Read More

C-Operators

C Language

C++

Modulus on Negative Numbers

The modulus operator, denoted as %, returns the remainder when one number (the dividend) is divided by another number (the divisor). Modulus of Positive Numbers… Read More

C-Operators

C Language

GFact | What is an atomic operation?

Atomic Operation What is an atomic operation? An idea of atomic operation helps in understanding reentrancy, critical section, thread safety, synchronization primitives, etc… (we will… Read More

GFacts

GFact | In C++ a Structure can have Static Members

In C, a structure cannot have static members, but in C++ a structure can have static members. For example, following program causes compilation error in… Read More

GFacts

Recursive Functions

A Recursive function can be defined as a routine that calls itself directly or indirectly. In other words, a recursive function is a function that… Read More

DSA

Recursion

Can a C++ class have an object of self type?

A class declaration can contain static object of self type, it can also have pointer to self type, but it cannot have a non-static object… Read More

C++

Optimization Techniques | Set 1 (Modulus)

Modulus operator is costly. The modulus operator (%) in various languages is costly operation. Ultimately every operator/operation must result in processor instructions. Some processors won’t… Read More

Bit Magic

DSA

Type Difference of Character Literals in C and C++

Every literal (constant) in C/C++ will have a type of information associated with it. In both C and C++, numeric literals (e.g. 10) will have… Read More

C++

GFact | const Behaviour in C and C++

const Behaviour in C and C++ In C, the const qualified identifiers will have external linkage, where as in C++ it will have internal linkage.… Read More

GFacts

Practice Questions for Recursion | Set 4

Question 1 Predict the output of the following program. C++ #include <iostream> using namespace std; void fun(int x) { if(x > 0) { fun(--x); cout… Read More

DSA

Misc

Recursion