以下程序的功能是计算s=1+1/2!+1/3!+......+1/n!，请填空。#include int main(){ double s=0.0,fac=1.0;int n,i;scanf("%d",);for(i=1;i<=n;i++){ fac=fac;s=s+1/;}printf("%lf",s);return 0;}