#include <iostream>
#include <cmath>
 
std::pair<double, double> div1(int num, double denom){
	double whole = std::floor(num / denom);
	double remain = std::fmod(num, denom);
	return {whole, remain};
}
std::pair<double, double> div2(int num, double denom){
	double floatdiv = num / denom;
	double whole;
	double remain = std::modf(floatdiv, &whole);
	return {whole, remain * denom};
}
std::pair<double, double> div3(int num, double denom){
	double whole = std::round(num / denom);
	double remain = std::remainder(num, denom);
	return {whole, remain};
}
int main() {
	double denom = 100.0 / 6;
	int divtype = 0;
	for(auto div: {div1, div2, div3}){
	    std::cerr << "== Using div" << ++divtype << " for this run ==\n";
        for(int i = 40; i <= 60; ++i){
            auto res = div(i, denom);
            std::cerr << i << ": " << res.first << ", " << res.second << " = " << res.first * denom + res.second << "\n";
        }
        auto oldprec = std::cerr.precision(64);
        auto res = div(50, denom);
        std::cerr << 50 << ": " << res.first << ", " << res.second << " = " << res.first << " * " << denom << " + " << res.second << " = " << std::floor(res.first) * denom + res.second << "\n";
        std::cerr.precision(oldprec);
        std::cerr << "\n";
	}
    return 0;
}
 

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