Question

C语言编程：Y=1+1/1!+1/2!+1/3!+……1/10！

Answer 1

#include<stdio.h>
float jie(float n)
{
float i,s=1;
for (i=1;i<n+1;i++)
{
s=s*i;
}
return s;
}
void main()
{
float y=0,i;
for (i=0;i<10;i++)
{
y=y+1/jie(i);
}
printf("%f\n",y);
}

运行结果是
2.718282

Answer 2

这不是求自然数e吗？我有VBS写的
dim e,n
e = 0
n = 10
for i = 0 to n
e = e + CDbl(1/factorial(i))
next
Function factorial(n)
if n = 0 then
factorial = 1
else
factorial = n*factorial(n-1)
end if
End Function

msgbox e