python/TangDou/LuoGuBook/L4_12.cpp

#include <bits/stdc++.h>

using namespace std;

//错误的代码，原因：double存在精度的问题
int main() {
    int n;
    double s = 0;
    cin >> n;
    for (double i = 0.1; i != n; i += 0.1) {
        s += i;
        cout << i << endl;
    }
    cout << s;
    return 0;
}