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I am a beginner with a lot of difficulty in understanding the recursive function, I know it is a function that calls itself, but I can not make it work happily, in the exercise practiced in class, was given the exercise...
"Make a function that receives a number and calculate its factorial."
What I did was the function below...
def fatorial():
num = int(input('Insira um número: '))
contador = 0
fatorial = 1
while contador < num:
contador += 1
fatorial = fatorial * contador
print('O fatorial de', num, 'é', fatorial)
fatorial()
The function is working smoothly, now I need to understand how to do the recursive function in this same exercise done previously, where it asks...
"Repeat the previous exercise using recursion, that is, a function that calls itself, remembering that 3! = 32!, what 2! = 21!, that 1! = 1*0! and that 0! = 1."
It would be the function considered recursive below ?
def fatorial(x):
if x == 1:
return 1
elif x==0:
return 1
else:
return x * fatorial(x-1)
while True:
x = int(input("Fatorial de: "))
print("Fatorial do número escolhido é: ",fatorial(x) )
fatorial(x)
I would also like to know if, the recursive function should have 1 single function or can have 2 functions, as well as I would make insertions in the first scope for both work if it is the case or if I should use only 1 scope, if it would be the second most indicated ?
Who can help me with the doubt, thank you !
Yes, the function
fatorial
is recursive because it calls itself (I suggest you read all the links that are in the blue box of this question). "the recursive function must have 1 single function or it can have 2 functions, as well as I would make insertions in the first scope for both work if it is the case or if I should use only 1 scope, if it would be the second most indicated" - I don’t understand what you mean, maybe you’re using the wrong terms to describe certain things or situations, because you got confused.– hkotsubo
Thank you...I probably made a mistake even being a mere beginner in python. Do you think the last time I programmed something, it was in the time of the extinct basic...rs
– Maudy Ikebe