How to write a multiple of a number in Python?-CodePudding

I want to test if the input is a multiple of 4 or not, and if it's not, then simply round UP the input to the nearest multiple of 4 (16, 20, 24, etc depending where the input number is).

Please have a look at the following code:

num = input("Enter a number: ")
if num != #a multiple of 4:
     num = round(num) #BUT round it up to the nearest multiple of 4, not just any number

any help would be appreciated, thanks!

CodePudding user response：

the following code should work:

num = int(input("Enter a number: "))
if num%4 != 0:
    num = 4 * (num//4   1)

CodePudding user response：

def round_up(number: int) -> int:
    return number   (-number % 4)

As an extension you could parametrise that 4 in the function to make is more generic.

CodePudding user response：

You could use module % with 4 is zero to test if number is multiple of 4:

num = int(input("Enter a number: ")) #add int function to convert entered value into number
if num % 4 = 0:
    print(f'{num} is multiple of 4 ')
else:
    print(f'nearest multiple of 4 of {num} is: {num   (-num % 4)}')

num (-num % 4) is the nearest multiple of 4 that num.

CodePudding user response：

Here's an easy implementation:

#Create a function to round number
def round_to_multiple(number, multiple):
    return multiple * round(number / multiple)



#Implementation
num = int(input("Enter a number: "))
if (num%4 != 0): #a multiple of 4:
    print(round_to_multiple(num,4))