///////////////////////////////////////////////////
// C++ versus printf (spoiler: C++ wins)         //
// (c) 2019 Andrey Kolobkoff <ceo@kolobkoff.biz> //
///////////////////////////////////////////////////

#include<iostream>
#include<iomanip>

///// FUUUU ////////////
#include<cstdio>// FUUUU
////////////////////////
///TODO: delete, use C++

using namespace std;

int main(int nOfArguments, const char* Arguments [])
	{
	
	//\\  ~  - --==# [ square equality's solution ] #==-- -  ~  \\//
	double a=2;
	double b=3.5;
	double c=1.5;
	double D=b*b-4*a*c;  //decrimenant's calculating
	
	/////////---------------- skiping some code here ---------///////////////////
	//........................................
	
	//\\  ~  - --==# [ C++ RULEZZZzZzZZzzz        ] #==-- -  ~  \\//
	//\\               flawles version, 1 LoC                   \\//
	std::cout << "decrimenant=" << std::fixed << std::setprecision(8) << D << std::endl << std::endl;
	//\\               end of C++                               \\//
	
	//\\  ~  - --==# [ printf @#$%@#%^!#@$!@#$    ] #==-- -  ~  \\//
	//\\               dirty ugly %!@#$&&$#% version, 5 LoC     \\//
	//\\               FUUUUUUUUU /!\ DO NOT TRY REPEAT IT /!\  \\//
	printf("decrimenant=");
	//printf("%.8d", D);  // decimal not ok, allways 0????? (PRINTF MUST DIE)
	double cel=int(D); double drob=int((D - cel) * 100000000);
	printf("%d.%08d", int(cel), int(drob));
	printf("\n");
	printf("\n");
	//\\               end of printf                            \\//
	
	/////////---------------- skiping some code here ---------///////////////////
	//........................................
	
	return a;//need return any thing
	}