Factorial. In mathematics, the factorial of an integer n, denoted by n!, is the product of all positive integers from 1 to n:
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n = int(input()) factorial = 1 for i in range(1, n + 1): factorial *= i print(factorial) |
- Reading Input:
- The
input() function reads a line of text from the user.
- The
int() function converts this input to an integer and stores it in the variable n.
- Initialize the Factorial:
- A variable
factorial is initialized to 1. This will be used to store the product of all positive integers up to nnn.
- Calculate Factorial:
for i in range(1, n + 1):
factorial *= i
- A
for loop iterates over the range from 1 to nnn (inclusive).
- In each iteration, the current number iii is multiplied with
factorial, updating its value.
- Print the Factorial:
- Finally, the
print() function outputs the value of factorial.