for嵌套的1+1/1!+1/2!+1/3!+.·····.+1/n!

Question

main()
{ float s;int a,b,n,j; s=1;
scanf("%d",&n);
for(a=1,a<=n;a++)
{for(b=1,b<=a;b++)
j*=b;
s=s+1.0/j;}
printf(".1f",s);
}
这样写对不对？
有错帮忙改一下吧

Answer 1

不对，s=s+1.0/j放在外层
还要再加一句，s++
不对，
把s++换成j=1