1 阶乘举个例子，6的阶乘，就是6*5*4*3*2*1
2 程序
print("="*100)
print("数字的阶乘")
def jiecheng(number):
result=1
while number>0:
result*=number
number-=1
return result
print("6的阶乘是",jiecheng(6))
print("4的阶乘是",jiecheng(4))
print("100的阶乘是",jiecheng(100))
3 结果
