啊？

大佬救我为什么不给过。

#include<bits/stdc++.h>
using namespace std;
double r(double a,int b){
    double factor=pow(10,b);
    return round(a*factor)/factor;
}
int s(double c){
    int sum=0;
    int temp=(int)(c*10000); 
    while(temp>0){
        sum+=temp%10;
        temp/=10;
    }
    return sum;
}
int main(){
    int a,c;
    double b;
    cin>>a;
    cin>>b;
    cin>>c;
    double d=r(b,c);
    cout<<d<<endl;
    cout<<s(d)<<endl;
    return 0;
}