疑问 为啥我这样写就不对 他说我编译错误 ">#define ll long long int ll a,sum=1; ll digui(ll x) { if(x==a+1) return sum; sum=sum*x; digui(x+1); } int main () { scanf("%lld",&a); printf("%lld",digui(1)); } 然后我加了个return 在递归里 ">#define ll long long int ll a,sum=1; ll digui(ll x) { if(x=...