# program to find factorial of any number entered by the user
print("To exit just Enter 'e' ")

while True:
    a = 1
    inp1 = input('Enter Number or Enter any alphabatic key to exit :')
    try:
        for i in range(int(inp1)):
            a *= (i+1)
        print(f'Factorial of {inp1} = {a}')
    except:
        break

print('Have A nice Day!!\nThank U!!!')