Examination_IT / ComputerScience_LaboratoryWork_ForStudent

201

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, 3, 0 17.1. #,.- InTextFile.cpp

using namespace std;

char szCurrentDir[_MAX_PATH]; char szNameFile[_MAX_PATH]; double faNumber[LIM_ARRAY];

//e L % %. ::GetCurrentDirectory(_MAX_PATH, szCurrentDir);

//~ LIM_ARRAY ! % ! :e L I %

//9 L !.

for(i=0; i<LIM_ARRAY; i++)

faNumber[i] = -10.0 + (double)rand()/(RAND_MAX + 1)*20.0;

// R % % QI JL IJ. setlocale(LC_CTYPE, "Russian_Russia.1251");

cout << "" K L I ;> "; cin >> szNameFile;

//z K L ! ;. strcat_s(szNameFile, _MAX_PATH, ".txt");

//I! € file ! I % ! J K L. ofstream file;

//r J JL K L szNameFile. file.open(szNameFile);

//J ! K L % % ! ANSI

file << " e % %: " << szCurrentDir << endl;

//J ! K L I % J J . file << "z : " << LIM_ARRAY << endl;

//J ! K L . J ! J

for(count = 0, i=0; i<LIM_ARRAY/2; i++)

205

{

for(j=0; j<2; j++)

file << scientific << setprecision(12)

<<setfill(' ') << setw(22) << right

<<faNumber[2*i+j];

file << endl; count++;

}

//! 9 J ! K L . J ! % ! ::

//% : .

for(j=0; j<LIM_ARRAY%2; j++)

file << scientific << setprecision(12)

<<setfill(' ') << setw(22) << right

<<faNumber[2*count+j];

file << endl;

// k J K L. file.close();

cout << endl;

cout << "( J I % J K L: \"" << szNameFile; cout << "\"" << endl;

system("pause");

}

H. 17.1. ; > out.txt InTextFile

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. 17.2.

206

, 3, 0 17.2. #,.- FromTextFile.cpp

int _tmain(int argc, _TCHAR* argv[])

{

using namespace std;

char szCurrentDir[_MAX_PATH]; char szNameFile[_MAX_PATH]; char szBuffer[255];

double *pfNumber;

int n; // K L. int i;

// R % % QI JL IJ. setlocale(LC_CTYPE, "Russian_Russia.1251");

cout << "" K L I ;> "; cin >> szNameFile;

//z K L ! ;

strcat_s(szNameFile, _MAX_PATH, ".txt");

//I! € file ! ! J I K L ifstream file;

//r J K L szNameFile. file.open(szNameFile); if(!file.is_open())

{

cout << "r; J K L \"" << szNameFile; cout << "\"" << endl;

cout << " I." << endl; system("pause");

return 1;

}

//| I K L

file.getline(szCurrentDir, _MAX_PATH);

//J ! _ % L

cout << endl << szCurrentDir << endl << endl;

// | K ! : "z :".

//( I J! % Q ! . pfNumber = new double[n];

//R J ! L , Q:

//! 12 K I I "+".

209

, 3, 0 17.3. #,.- InBinaryFile.cpp

void _tmain()

{

setlocale(LC_CTYPE, "Russian_Russia.1251"); using namespace std;

//" I % ! L J . int nRangeMin = 10, nRangeMax = 100;

//" K L.

char szNameFile[] = "MyBiFile.bin";

//z L . unsigned long dwBytesPerSector;

//z . unsigned long dwSectorsPerCluster;

//z ! J . unsigned long dwNumberOfFreeClusters;

//r e . unsigned long dwTotalNumberOfClusters; int i;

//K : ! ! C: GetDiskFreeSpace("C:\\", &dwSectorsPerCluster,

&dwBytesPerSector, &dwNumberOfFreeClusters, &dwTotalNumberOfClusters );

//~ ! % ! :e L I %

//9 L !.

for(int i=0; i<nNumb; i++)

nDigital[i] = nRangeMin + rand()%(nRangeMax - nRangeMin);

//I! € fi ! I % ! J K L ofstream fi;

//r J JL K L szNameFile. fi.open(szNameFile , ios::binary);

//k % Q J ! J.

fi.write((char*)&dwBytesPerSector, sizeof(DWORD)); fi.write((char*)&dwSectorsPerCluster, sizeof(DWORD)); fi.write((char*)&dwNumberOfFreeClusters, sizeof(DWORD)); fi.write((char*)&nNumb, sizeof(int));

// k % Q dNumb J !.

210

fi.write((char*)nDigital, nNumb*sizeof(nDigital[0])); fi.close();

// J ! K % 9.

cout << "( J, I % J JL K L " ; cout << szNameFile << ":" << endl << endl;

system("pause");

}

D FromBinaryFile ( 17.4) -

> MyBiFile.bin > A [ -

( . 17.4).

H. 17.4. H FromBinaryFile

, 3, 0 17.4. #,.- FromBinaryFile.cpp

#include "stdafx.h"