**Calculate Power of a Number using recursion**

**Calculate Power of a Number using recursion**

Write a C program to Calculate Power of a Number using recursion. Here’s simple program to Calculate Power of a Number using recursion in C Programming Language.

**Recursion : :**

**Recursion : :**

- Recursion is the process of repeating items in a self-similar way. In programming languages, if a program allows you to call a function inside the same function, then it is called a
of the function.**recursive call**

- The C programming language supports recursion, i.e., a function to call itself. But while using recursion, programmers need to be careful to define an exit condition from the function, otherwise it will go into an infinite loop.
- Recursive functions are very useful to solve many mathematical problems, such as calculating the factorial of a number, generating Fibonacci series, etc.

Here is the source code of the C program to Calculate Power of a Number using recursion. The C Program is successfully compiled and run on a Windows system. The program output is also shown below.

**SOURCE CODE : :**

**SOURCE CODE : :**

/* C program to Calculate Power of a Number using recursion */ #include<stdio.h> int i=1; long int sum=1; long int power(int num,int pow); int main() { int pow,num; long int res; long int power(int,int); printf("Enter any number :: "); scanf("%d",&num); printf("\nEnter power to the number [ %d ] :: ",num); scanf("%d",&pow); res=power(num,pow); printf("\n%d to the power %d [ %d ^ %d ] is :: %ld\n",num,pow,num,pow,res); return 0; } long int power(int num,int pow) { if(i<=pow) { sum=sum*num; power(num,pow-1); } else return sum; }

**OUTPUT : :**

**OUTPUT : :**

/* C program to Calculate Power of a Number using recursion */ Enter any number :: 2 Enter power to the number [ 2 ] :: 5 2 to the power 5 [ 2 ^ 5 ] is :: 32 Process returned 0

Above is the source code for C program to Calculate Power of a Number using recursion which is successfully compiled and run on Windows System.The Output of the program is shown above .

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