小北的身高是 1.65 米。班上有 n 个小朋友，小北想和身高最接近自己的人交朋友。如果有多个小朋友 与小北的身高差相同，小北想和其中身高较矮的第一个小朋友做朋友。横线处应该填入的是（ ）。

int n, i;
float target, h, best_height, min_diff, diff;

cout << "请输入小朋友的人数: ";
cin >> n;
target = 1.65;
best_height = 0.0;
min_diff = 100.0;

for (i = 0; i < n; i++) {
    cout << "请输入第 " << (i + 1) << " 个小朋友的身高: ";
    cin >> h;

    if (h > target)
        diff = h - target;
    else
        diff = target - h;

    if (diff < min_diff) {
        min_diff = diff;
        best_height = h;
    } else if (diff == min_diff) {
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    }
}

cout << "小北的朋友身高为:" << best_height;