问答题下列C语言程序是求阶乘的累加和:s=0!+1!+2!+…+n!根据题意,请完善下列程序。#include<stdio.h>long f(int n){int i:long s;if(n==0)return ____(①)____ ;s= ____(②)____ ;for(i=1;i<=n;i++)s= ____(③)____ ;return s:}main(){long s;int k,n;scanf( %d ,&n);s= ____(④)____ ;for(k=0;k<=n;k++)s=s+ ____(⑤)____ ;printf( %1d ,s);}