C program to compute the value of X ^ N, given X and N as inputs. Program accepts two integers x, n and computes the power of x to the n by using recursion function power(). Read more about C Programming Language .
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#include <stdio.h>
#include <math.h>
void main()
{
long int x,n,xpown;
long int power(int x, int n);
printf("Enter the values of X and Nn");
scanf("%ld %ld",&x,&n);
xpown = power (x,n);
printf(" %d to the power %d = %ldn",x,n,xpown);
}
/*Recursive function to computer the X to power N*/
long int power(int x, int n)
{
if (n==1)
return(x);
else if ( n%2 == 0)
return (pow(power(x,n/2),2)); /*if n is even*/
else
return (x*power(x, n-1)); /* if n is odd*/
}
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