Python Function Program with input argument and with return value

This type of function has one or more input argument and also a value to return to the main program.

Write a program to input a number and calculate its factorial.

Program:

def factorial(a):

f=1

for i in range (1,a+1):

f=f*i

return f

num=int(input("Enter a number: "))

b=factorial(num)

print("Factorial of Enter Number is", b)

Output:

Enter a number: 3

Factorial of Enter Number is 6