Program To Calculate The Factorial Of A Number

In this program, we will calculate the factorial of a number.

Take a number as input through the user.
Create a variable and assign its value equal to 1.
While the number is greater than 0 multiply the variable by given number and subtract 1 from the number.
Print the output in the end.

				
					num=int(input("Enter a number: "))
fact = 1

while num>0:
    fact = fact*num
    num = num-1

print(f"factorial of {num} is: ",fact)

Output :

				
					Enter a number: 5
factorial of 5 is:  120

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Program to calculate the factorial of a number