题目描述计算t=1+12+13++1n输入整型变量n输出t保留六位小数样例输入 复制10样例输出 复制2928968 cpp

#include <iostream>
#include <iomanip>
using namespace std;

int main() {
    int n;
    cin >> n;
    
    double t = 0;
    for (int i = 1; i <= n; i++) {
        t += 1.0 / i;
    }
    
    cout << fixed << setprecision(6) << t << endl;
    
    return 0;
}