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

MCQ

C++ MCQ C++ MCQ Part 2

Interview Question

next → ← prev

C++ Math pow()

This function is used to find the power of a given number.

Consider a base 'b' and exponent 'e'.

Power=b^e

Syntax

Its syntax would be :

double pow(double b, double e);
float pow(float b, float e);
long double pow(long double b, long double e);
promoted pow(type1  b, type2 e);

Note: If any argument is of long double type, then the return type is promoted to long double. If not, then the return type is promoted to double.

Parameter

b: 'b' is the number, whose power is to be calculated.

e: 'e' is the exponent.

Return value

It returns the base 'b'raised to the power 'e'.

Example 1

Let's see a simple example when both base and exponent are of integer type.

#include <iostream>
#include<cmath>
using namespace std;
int main()
{
int base=4;
  int exponent=2;
  int power=pow(base,exponent);
  std::cout << "Power of a given number is :" <<power;
  return 0;
}

Output:

Power of a given number is :16

Example 2

Let's see a example when base is of float type and exponent is of integer type.

#include <iostream>
#include<cmath>
using namespace std;
int main()
{
   int base=4.5;
  int exponent=3;
  int power=pow(base,exponent);
  std::cout << "Power of a given number is :" <<power;
  return 0;
}

Output:

Power of a given number is :64

Example 3

Let's see a simple example when both base and exponent are of float type..

#include <iostream>
#include<cmath>
using namespace std;
int main()
{
   int base=2.5;
  int exponent=2.5;
  int power=pow(base,exponent);
  std::cout << "Power of a given number is :" <<power;
  return 0;
}

Output: