以0 0结尾，最后一行怎么样能没有空格

这道题请大佬们指点一下，谢谢了！

#include <iostream>
#include <iomanip>

int main()
{
    float weight = 0.0f;
    float height = 0.0f;
    float bmi = 0.0f;
    std::cout << std::fixed << std::setprecision(2);
    do
    {
        std::cin >> weight >> height;
        bmi = weight / (height * height);
        std::cout << "体重指数" << bmi << ',';
        if (bmi < 18.5f)
            std::cout << "偏瘦";
        else if (bmi < 24.0f)
            std::cout << "正常体重";
        else if (bmi < 27.0f)
            std::cout << "轻微肥胖";
        else if (bmi < 30.0f)
            std::cout << "中度肥胖";
        else
            std::cout << "重度肥胖";
        std::cout << '\n';

    } while (weight != 0.0 && height != 0.0f);
    return 0;
}