在C++中搜索双精度数组中的最近值？

#include<iostream>
#include<vector>
#include <cmath>
#include<limits>

using namespace std;

double distance(double a, double b) {
    return abs(a - b);
}

double findNearestValue(const vector<double>& arr, double target) {
    double nearestValue = arr[0];
    double minDistance = distance(arr[0], target);

    for (size_t i = 1; i < arr.size(); ++i) {
        double currentDistance = distance(arr[i], target);
        if (currentDistance < minDistance) {
            minDistance = currentDistance;
            nearestValue = arr[i];
        }
    }

    return nearestValue;
}

int main() {
    vector<double> arr = {1.0, 2.0, 3.0, 4.0, 5.0};
    double target = 3.5;

    double nearestValue = findNearestValue(arr, target);
    cout << "The nearest value to "<< target << " is "<< nearestValue<< endl;

    return 0;
}

The nearest value to 3.5 is 3