How to find the power of a number using loop in Python

How to find the power of a number using loop in Python:

In this post, we will learn how to find the power of a number using a loop in python. In a production application, you can always use the pow() function to find the power of a number. But if you don’t want to use it, we can create one function that will repeatedly multiply the number to find the power value.

Find the power by using a for loop:

Let’s try it with a for loop first. Below is the complete program that uses a for loop to find the power:

num = int(input("Enter the number: "))
p = int(input("Enter the power: "))

result = 1
for i in range(p):
    result *= num

print("Result : {}".format(result))

Here,

num is the number. We are reading its value as an user input.
p is the value of the power. We are also reading its value as input from the user.
result is used to store the final result. It is initialized as 1.
The for loop is used to calculate the final result. It multiplies the value of result with num and assigns that value to result.
Once the for loop ends, we are printing the value of result.

If you run this program, it will print output as like below:

Enter the number: 3
Enter the power: 4
Result : 81

Find the power by using a while loop:

We can also use a while loop to find the power of a number. It works similar to the for loop example we did above. Below is the complete program that uses a while loop to find the power of a number:

num = int(input("Enter the number: "))
p = int(input("Enter the power: "))

result = 1
while p > 0:
    result *= num
    p = p - 1

print("Result : {}".format(result))

You can see that it solves the issue similarly. The only difference is that the while loop runs until the value of p is greater than 1. We are decrementing the value of p inside the loop on each iteration. So, it will accumulate the power value at the end of the loop.

If you run it, it will print a similar output.

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How to find the power of a number using loop in Python