15. Pow(x,n)

Implement the power function pow(x, n) , which calculates the x raised to n i.e. xn.

Note : In output print 6 digits places after decimal point.

Example 1:

Input : x = 2.0000 , n = 10

Output : 1024.0000

Explanation : Answer = 2^10 => 1024.

Example 2:

Input : x = 2.0000 , n = -2

Output : 0.2500

Explanation : Answer = 2^(-2) = 1/4 => 0.25.

Now Your Turn!

Pick the correct output for the given input

Input : x = 2.5000 , n = 2

Still unsure what the problem is asking ?

Let’s go through a few more examples, step by step, to make it clearer.

Constraints:

  • -100.0 <= x <= 100.0
  • -231 <= n <= 231 - 1
  • -104 <= xn <= 104
  • Either x is not zero or n>0.
  • n is an integer.

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0
class Solution {
public:
double myPow(double x, int n) {
//your code goes here
}
};
Test Case

Input:

N
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