这样？：
#include #include double f(int n){ double Sum = 0.0; for (int index = 1; index <= n; ++index) { Sum += log(index*1.0); } return sqrt(Sum);}int main(){ std::cout << "f(10)的值为：" << f(10) << std::endl;//f(10)的值为：3.88644 return 0;}
#include#includeusing namespace std;double Mylog(int n){ int i; double sum=0; for(i=1;i<=n;i++) { sum+=log(i); } return sum;}int main(){ cout< return 0;}
