Does anybody know how you can write a factorial in a while loop? I can make it in an if / elif else statement: num = ... print("must be positive") print("factorial = 1") for i in range(1,num + 1): factorial = factorial*i. print(num, factorial) But I want to do this with a while loop (no function). A for loop can be rewritten as a while loop.

Mar 7, 2024 · In this approach, a while loop is used to create the factorial. It’s quite similar to the for loop method but uses a while loop instead, decrementing the number each time until it reaches 1. Here’s an example: Output: 120. This function, factorial(num), also computes the factorial of …

Apr 8, 2025 · This code calculates the factorial of a number by first finding the prime factors of each number from 2 to n, and then multiplying them together to compute the factorial.

To use a while loop to find the factorial of a number in Python: Ask a number input. Initialize the result to 1. Start a loop where you multiply the result by the target number. Reduce one from the target number in each iteration. End the loop once the target number reaches 1. …

Dec 16, 2014 · def factorial (num): if num == 0: return 1 else: return num * factorial(num - 1) print factorial (5)

1. Take a number from the user. 2. Initialize a factorial variable to 1. 3. Use a while loop to multiply the number to the factorial variable and then decrement the number. 4. Continue this till the value of the number is greater than 0. 5. Print the factorial of the number. 6. Exit.

Here, the number whose factorial is to be found is stored in num, and we check if the number is negative, zero or positive using if...elif...else statement. If the number is positive, we use for loop and range () function to calculate the factorial.

May 30, 2017 · I am a python student that's new to python and I am required to write a program that calculates the factorial of an input number to find the possible ways to arrange letters in a Scrabble game with only the "while" loop construct. For example: I request for an input number from a user through a line like this initially:

Here you will get Python program to find factorial of number using for and while loop. The Factorial of a number is calculated by multiplying it with all the numbers below it starting from 1.

Mar 12, 2021 · When it is required to find the factorial of a number without using recursion, the ‘while’ loop can be used. Example Below is a demonstration for the same − Live Demo my_num = int(input("Enter a number :")) my_factorial = 1 while(my_num>0): my_factorial = my_factorial*my_num my_num=my_num-1 print("The factorial of the number is : ")