#for 和 while 求n！
n = int(input("请输入一个整数您将得到阶乘"))
sum = 1
for i in range(1, n + 1):
    sum *= i
print("for循环的阶乘：", sum)
sum = 1
i = 1
while(i <= n):
    sum *= i
    i = i + 1
print("while循环的阶乘：", sum)