ФІО = Чтение с файла числовой информации + сортировка + рандом

 Запитання:#include <windows.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <time.h>

#define PROGRAM_CONSOLE_IN_MODE
//#define PROGRAM_RANDOM_MODE
//#define PROGRAM_FILE_IN_MODE

//#define DEBUGMODE


using namespace std;

void swap(double *a, double *b)
{
	double temp = *a;
	*a = *b;
	*b = temp;
}

void PrintArray(double *a, int length)
{
	for (int i = 0 ; i < length ; i++)
	{
		cout<<*(a+i)<<"\t";		
	}
	cout<<endl;
}

void SortArray(int count_, double *mas)
{
	for (int i = 0 ; i < count_ ; i++)
	for (int j = 0 ; j < i ; j++)
	{
		if ( *(mas+i) < *(mas+j))
		{
			swap(mas+i,mas+j);
			#ifdef DEBUGMODE
				cout<<"[DEBUG] ";
				PrintArray(mas,count_);
			#endif
		}
	}
}

int main()
{
	srand(time(NULL));
	
	int count;

	#ifdef PROGRAM_FILE_IN_MODE
		ifstream fin;
		fin.open("in.txt");

		if (fin.is_open())
		{
			cout<<"File opened!"<<endl;
		}
		else
		{
			cout<<"File not found!"<<endl;

			system("pause");
			return 0;
		}
		fin>>count;
	#endif
	
	#ifdef PROGRAM_CONSOLE_IN_MODE
	cout << "Enter array length : ";
	cin  >> count;
	if (count <=1)
	{
		cout<<"Invalid array length!";
		system("pause");
		return 0;
	}
	#endif

	#ifdef PROGRAM_RANDOM_MODE
	cout << "Enter array length : ";
	cin  >> count;
	#endif

	double *mas = new double[count];

	#ifdef PROGRAM_FILE_IN_MODE
		for (int i = 0 ; i < count ; i++)
		{
			fin>>*(mas+i);
		}
		fin.close();
	#endif

	#ifdef PROGRAM_CONSOLE_IN_MODE
		for (int i = 0 ; i < count ; i++)
		{
			cout<<"Enter [ "<<i<<" ] = ";
			cin>>*(mas+i);

		}
	#endif
	#ifdef PROGRAM_RANDOM_MODE
		for (int i = 0 ; i < count ; i++)
		{
			*(mas+i)=rand()%201-100;

		}
		#endif
	cout<<endl;
	cout<<endl;
	
	for (int i = 0 ; i < count ; i++)
	{
		cout<<*(mas+i)<<"\t";		
	}
	cout<<endl;

	SortArray(count, mas);

	PrintArray(mas, count);
	ofstream fout;
	fout.open("textt.txt");
	for(int i=0;i<count;i++)
	{
		fout<<*(mas+i)<<' ';
	}
	fout.close();
	system("pause");

	return 0;
}

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