Write a program to calculate pow(x,n) in C++



In this problem, we are given two integers x and n. Our task is to write a program to calculate the pow(x,n).

Let's take an example to understand the problem,

Input: x = 5 , n = 3
Output: 125

Example

Program to calculate the pow(x,n):

#include 
using namespace std;

float myPow(float x, int y) {
   if (y == 0)
      return 1;
   float temp = myPow(x, y / 2);
   if (y % 2 == 0)
      return temp * temp;
   else {
      if (y > 0)
         return x * temp * temp;
      else
         return (temp * temp) / x;
   }
}
int main() {
   float x = 5;
   int n = 7;
   cout 

Output

Raised to the power 7 is 78125

The program shows an efficient approach by dividing the power into half and then multiplying the two half and also considers the negative cases.

Updated on: 2020-04-20T11:22:37+05:30

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