Home
C++
C
C#
Java
PHP
HTML
CSS
JavaScript
jQuery
XML
JSON
Ajax
Node.js
SQL
Projects
Interview Q

C++ Tutorial

C++ Tutorial C vs C++ C++ History C++ Features C++ Installation C++ Program C++ cout, cin, endl C++ Variable C++ Data types C++ Keywords C++ Operators C++ Identifiers C++ Expression

C++ Control Statement

C++ if-else C++ switch C++ For Loop C++ While Loop C++ Do-While Loop C++ Break Statement C++ Continue Statement C++ Goto Statement C++ Comments

C++ Functions

C++ Functions Call by value & reference C++ Recursion C++ Storage Classes

C++ Arrays

C++ Arrays C++ Array to Function Multidimensional Arrays

C++ Pointers

C++ Pointers sizeof() operator in C++ C++ Array of Pointers C++ Void Pointer C++ References Reference vs Pointer Function Pointer in C++ C++ Memory Management malloc() vs new in C++ free vs delete in C++

C++ Object Class

C++ OOPs Concepts C++ Object Class C++ Constructor C++ Copy Constructor C++ Destructor C++ this Pointer C++ static C++ Structs C++ Enumeration C++ Friend Function C++ Math Functions

C++ Inheritance

C++ Inheritance C++ Aggregation

C++ Polymorphism

C++ Polymorphism C++ Overloading C++ Overriding C++ Virtual Function

C++ Abstraction

C++ Interfaces C++ Data Abstraction

C++ Namespaces

C++ Strings

C++ Exceptions

C++ Exception Handling C++ try/catch C++ User-Defined

C++ Templates

Signal Handling

C++ Signal Handling

C++ File & Stream

C++ File & Stream C++ getline()

C++ Misc

C++ vs C# C++ int to string C++ vs Python Structure vs Class in C++ Virtual Destructor in C++ Constructor vs Destructor in C++ Bit manipulation C++ What is a reference variable Friend Function in C++ Snake Code in C++ Inline function in C++ Virtual function vs Pure virtual function in C++ How to Split strings in C++ Range-based for loop in C++ Type Conversion in C++ LCM of two numbers in C++ Convert string to integer in C++

C++ STL Tutorial

C++ STL Components C++ Vector Initialize Vector in C++ C++ Deque C++ List C++ Set C++ Stack C++ Queue C++ Priority Queue C++ Map C++ Multimap C++ Map C++ Bitset C++ Algorithm

C++ Iterators

C++ Iterators C++ Bidirectional Iterator C++ Forward Iterator C++ Input Iterator C++ Output Iterator

C++ Programs

C++Programs Fibonacci Series Prime Number Palindrome Number Factorial Armstrong Number Sum of digits Reverse Number Swap Number Matrix Multiplication Decimal to Binary Number in Characters Alphabet Triangle Number Triangle Fibonacci Triangle Char array to string in C++ Calculator Program in C++ Program to convert infix to postfix expression in C++ using the Stack Data Structure C++ program to merge two unsorted arrays C++ coin change program C++ program to add two complex numbers using class C++ program to find the GCD of two numbers C++ program to find greatest of four numbers Delete Operator in C++ How to concatenate two strings in c++ Upcasting and Downcasting in C++ C++ Dijkstra Algorithm using the priority queue Constructor overloading in C++ Default arguments in C++ Dynamic binding in C++ Dynamic memory allocation in C++ Fast input and output in C++ Hierarchical inheritance in C++ Hybrid inheritance in C++ Multiple Inheritance in C++ C++ Bitwise XOR Operator Different Ways to Compare Strings in C++ Reverse an Array in C++ C++ date and time Copy elision in C++ Array of sets in C++ Smart pointers in C++ Types of polymorphism in C++ Implementing the sets without C++ STL containers Scope Resolution Operator in C++ Static Member Function in C++ Const keyword in C++ Memset in C++ Type Casting in C++ Binary Operator Overloading in C++ Binary Search in C++ Inheritance in C++ vs JAVA Static Keyword in C++ and JAVA Exception Handling in C++ and JAVA Foreach in C++ and JAVA C++ templates vs. Java generics Similarities and Differences in C++ and JAVA Default Virtual Behaviour in C++ and JAVA C++ hashing programme with chaining Largest subset whose all elements are Fibonacci numbers Opaque Pointer Pointers such as Dangling, Void, Null, and Wild When do we pass arguments by reference or pointer Find Member Function in Vector in C++ Smart Pointer Currency Converter in C++ Find max in Array Function C++ Stopwatch in C++ Student Data Management in C++ Tic-Tac-Toe in C++ Credit Card Validator in C++ Hotel Management in C++ Pacman Game in C++ Billing Management System in C++ 4-Dimensional Array in C/C++ accumulate() and partial_sum() in C++ STL : Numeric header Arrays of Vectors in C++ STL Catching Base and Derived Classes as Exceptions in C++ and Java Forward List in C++ Manipulating Functions Assertions in C/C++ List back() function in C++ STL Type Inference in C++ (auto and decltype) Attributes in C++ BigInt (Big Integers) in C++ with Examples 2D Vector in C++ with User Defined Size Declare a C/C++ Function Returning Pointer to Array of Integer Pointers Jump Statements in C++ Maximum Number of Edges to be Added to a Tree so that it stays a Bipartite Graph Modulus of two Float or Double Numbers Top 10 C++ Project Ideas for Beginners C++ Class Member Functions C++ Program for Find k pairs with Smallest Sums in Two Arrays Check if bits in Range L to R of Two Numbers are Complement of Each other or Not University Management System in C++ Advantage and Disadvantage Friend Function C++ C++ Pre-processors Difference between Circular Queue and Priority Queue forward_list::cbefore_begin() in C++ STL Heap in C++ STL | make_heap(), push_heap(),pop_heap(), sort_heap(), is_heap, is_heap_until() How does 'void*' differ in C and C++ Initialise an Array of objects with Parameterised Constructors in C++ list::push_front() and list::push_back() in C++ STL Maximize the Cost of Repeated Removal of String P or its Reverse from the String S Canteen Management System in C++ Declare a C/C++ Function Returning Pointer to Array of Integer Pointers Name Mangling and Extern C in C++ Different Compilers for C++ Diamond Problem in C++ Function Prototype in C++ Generic Programming in C++ School Fee Enquiry System in C++ Vector Pair in C++ What is a Token in C++ What is include iostream in C++ C++ 'Using' vs 'Typedef' Execute both if and else Statements in C/C++ Simultaneously How to Compile 32-bit Program on 64-bit GCC in C and C++ How to Create and Use ''unique_ptr'' Instances Level Order Traversal in Spiral form Problem with scanf() when there is fgets()/gets()/scanf() After it BFS Code in C++ Create Linked List In C++ Function Overloading in C++ std::minmax() and std::minmax_element() in C++ STL multimap::emplace_hint() Function in C++ STL Multimap find() in C++ STL Multiple Comparisons in a C++ Priority Queue Name Mangling and Extern C in C++ Concept Parameterised Constructor in C++ Remove Duplicates from Sorted Array in C++ Returning Multiple Values from a Function using Tuple and Pair in C++ Scope Resolution Operator vs this Pointer Set a variable without using Arithmetic, Relational or Conditional Operator C++ Program To Sort An Array In Descending Order Timsort Implementation Using C++ What Happens When We Exceed Valid Range of Built-in Data Types in C++ Naked Function Calls in C++ What is operator overloading in C++ Simple Car Racing Game Code in C++ SJF CPU Scheduling Program in C++ Virtual functions and runtime polymorphism What is an abstract class in C++ What is function overloading in C++ Add in Vector C++ Language Default arguments and virtual function Private Inheritance in C++ Socket Programming in C/C++ Multithreading in C++ with Examples Static Object in C++ What is runtime type information Operator Overloading in C++ Add two Array in C++ Calling Conventions in C++ HASHSET IN C++ How many Children does a Binary Tree have How to Create and use CComPtr and CComQIPtr Instances Naming Conventions in C++ DYNAMIC ARRAY STRCMP() IN C++ Add two Numbers using Class in C++ Adding of Two Numbers in C++ Adding Two Arrays in C++ Adding Two Objects in C++ Add two Numbers using Function in C++ C++ class to prevent object copies Raw string literal in C++ Add Two no in C++ program Binary Decision Tree Boolean to String in C++ Stoi function in C++ ToLOWER In C++ UNORDERED_MAP IN C++ C++ Books for Beginners Activity Selection Problem in C++ Activity Selection Program in C++ Actual Argument and Formal Argument in C++ Actual Parameter and Formal Parameter in C++ Adding Two Strings in C++ Adding Vectors in C++ How To Convert a Qstring to Hexadecimal in C++ PAIR IN C++ C++ Program to Count Positive and Negative Numbers in an Array Department Store Management System (DSMS) using C+ Print all Substrings of a String that has equal number of vowels and consonants in C/C++ Accumulator in C++ Acess Specifiers in C++ Add Two Matrix in C++ Add two Numbers in C++ program Add two Numbers Represented by Linked Lists in C++ Associative Containers in C++ C++ Books for Beginners Dynamic Initialization of Objects in C++ Array sum in c++ stl The distinction between the C++ copy constructor and assignment operator Boost::split in c++ library Difference between Declaration of User Defined Function Inside main() and Outside of main() Isprint() in C++ Std partition point in c++ Opening and Closing a File in C in C++ Pdf Overriding Member Function in C++ Password Validation in C++ PID Controller C++ Best C++ Online Course Unordered Set in C++ Convert Camel Case String in Snake Case in C++ C++ Program to Draw Histogram C++ DSA C++ Flow Control C++ program to group anagrams in the given stream of strings cstdlib in C++ Everything You Need to Know About Conio.h Library Functions in C/C++ Increment and Decrement Operators in C++ How to generate random number between 1 to 10 in C++ How to Manipulate cout Object using C++ IOS Library Sliding Window Algorithm in C++ What is Bottom-up Approach in C++ What is Top-Down Approach in C++ Bitmask in C++ Ordered Map C++ Characteristics of Destructor in C++ Factory Design Pattern C++ REPL C++ AVL Tree in C++ Des in C++ Boost Library in C++ C++ 11 Lambda Expression Concurrency in C++ C++ GUI Static Library Linking in C++ Constexpr in C++ Difference between break and continue in C++ C++ Boolean Encapsulation in C++ OpenGL C++ Sequence Containers in C++ Difference between C++ and rust Falcon C++ Popcount C++ Boost C++ C++ Function Object Boost Library in C++ C++ Concurrency What are Macros in C++ Design Pattern in C++ C++ Factory Pattern Functor in C++ C++ GUI How to Create a New Thread in C++ C++ Static Member C++ Static Variable C++ Template Specialization Difference between New and Delete operator in C++ Differences between Vector and List in C++ Dynamic Cast in C++ Shell sort in C++ Jagged Array in C++ What is containership in C++ Cerr in C++ Make_shared in C++ Rethrowing an Exception in C++ Trigraphs in C++ Cin.ignore() function in C++ Difference between function overloading and function overriding in C++ Typeid operator in C++ String_view in C++ Anonymous objects in C++ Cerr in C++ Make_shared in C++ Rethrowing an Exception in C++ Trigraphs in C++ Cin.ignore() function in C++ Difference between function overloading and function overriding in C++ Typeid operator in C++ String_view in C++ Anonymous objects in C++ abdul bari c++ Conversion Constructor in C++ Find Leap Year in C++ How to Access Vector Elements in C++ Static cast in C++ Symbol Table in C++ tellp() function in C++ Matrix addition in C++ Visibility Modes in C++ C++ Initializer List Diffie-Hellmam Algorithm in C++ Wide Character in C++ Bitwise Operators in C++ How Many Indicators are Available in C++ iota() in C++ Tellg() Function in C++ Coroutines in C++ Isdigit() function in C++ isupper() function in C++ npos in C++ seekg() function in C++ Trie Data Structure in C++ Difference between C++ and JavaScript CStudio in C++ Dosbox C++ DOSBox Turbo C++ Object Creation in C++ Bisection method in C++ Cin.get() in C++ Edmonds Karp Algorithm in C++ Include guards in C++ Weak Pointer in C++

MCQ

C++ MCQ C++ MCQ Part 2

Interview Question

next → ← prev

C++ Math ilogb()

The function returns the exponent part of a given number i.e integral part of logx.

ilogb() function is equivalent to (int)logb()

Syntax

int ilogb(float x);
int ilogb(double x);
int ilogb(long double x);
int ilogb(integral x);

Parameter

x: It is the value whose exponent is to be calculated.

Return value

Parameter	Return value
x=0	-INT_MIN
x=NAN or +inf or _inf	INT_MAX

Example

Let's see the simple example

#include <iostream>
#include<math.h>
#include<float.h>
using namespace std;
int main()
{
 int x=4;
 std::cout << "Value of x is : " <<x<< std::endl;
 cout<<"Exponent value of x is : "<<ilogb(x);
 return 0;
}

Output:

Value of x is : 4
Exponent value of x is : 2

Next TopicC++ Math Functions

← prev next →

For Videos Join Our Youtube Channel: Join Now

Feedback

Send your Feedback to [email protected]

Help Others, Please Share

Learn Latest Tutorials

Splunk

SPSS

Swagger

Transact-SQL

Tumblr

ReactJS

Regex

Reinforcement Learning

R Programming

RxJS

React Native

Python Design Patterns

Python Pillow

Python Turtle

Keras

Preparation

Aptitude

Reasoning

Verbal Ability

Interview Questions

Company Questions

Trending Technologies

Artificial Intelligence

AWS

Selenium

Cloud Computing

Hadoop

ReactJS

Data Science

Angular 7

Blockchain

Git

Machine Learning

DevOps

B.Tech / MCA

DBMS

Data Structures

DAA

Operating System

Computer Network

Compiler Design

Computer Organization

Discrete Mathematics

Ethical Hacking

Computer Graphics

Software Engineering

Web Technology

Cyber Security

Automata

C Programming

C++

Java

.Net

Python

Programs

Control System

Data Mining

Data Warehouse

^{Like/Subscribe us for latest updates or newsletter}

Learn Tutorials

Learn Java Learn Data Structures Learn C Programming Learn C++ Tutorial Learn C# Tutorial Learn PHP Tutorial Learn HTML Tutorial Learn JavaScript Tutorial Learn jQuery Tutorial Learn Spring Tutorial

Interview Questions

Java Interview Questions SQL Interview Questions Python Interview Questions JavaScript Interview Questions Angular Interview Questions Selenium Interview Questions Spring Boot Interview Questions HR Interview Questions C++ Interview Questions Data Structure Interview Questions

About

Javatpoint is developed to help students on various technologies such as Artificial Intelligence, Machine Learning, C, C++, Python, Java, PHP, HTML, CSS, JavaScript, jQuery, ReactJS, Node.js, AngularJS, Bootstrap, XML, SQL, PL/SQL, MySQL etc.

Javatpoint provides tutorials with examples, code snippets, and practical insights, making it suitable for both beginners and experienced developers.

There are also many interview questions which will help students to get placed in the companies.

Contact

Address: G-13, 2nd Floor, Sec-3

Noida, UP, 201301, India

Contact No: 0120-4256464, 9990449935