#
#  Compute n-factorial for some n entered by the user using a for loop.
#

# Read n from the user.
n = int(input("Enter an integer: "))

# Initialize result to 1.
result = 1

# For each value for 1 to and including n.
for i in range(1, n+1):
  # Multiply the current value by the result so far.
  result = i * result

# Display the result.
print(n, "factorial is equal to", result)