C++ - 同步讀寫文本 代碼(C++)

同步讀寫文本 代碼(C++)

寫程序: 每個2秒寫入文本一個數字;

讀程序: 每個5秒讀入文本最後一個數字;

寫程序代碼:

#include 
#include 

#include 

using namespace std;

int main (void) {

	ofstream ofs(D:/w.txt);
	int num = 0;
	while (1) {
		ofs << ++num << std::endl;
		std::cout  << num << std::endl;
		Sleep(2000);
	}

	ofs.close();

	return 0;
}

讀程序代碼:

/*
 * main.cpp
 *
 *  Created on: 2014.06.08
 *      Author: Spike
 */

/*vs 2012*/

#include 
#include 
#include 
#include 
#include 

using namespace std;

int main()
{
	vector tmp_files;

	while (1) {
		Sleep(5000);
		ifstream infile( D:/w.txt );
		if (!infile) {
			cout << fail! << endl;
			return 0;
		}

		string lineContent;
		while ( getline( infile, lineContent, '
' ) ){
			tmp_files.push_back(lineContent);
		}
		infile.close();

		std::cout << *(tmp_files.end()-1) << std::endl;
	}

	/*ofstream outfile( w2.txt,ios::out );
	vector::iterator siter = tmp_files.begin();

	copy( tmp_files.begin(), tmp_files.end()-1, ostream_iterator(outfile) );
	cout << ok! << endl;
	outfile.close();*/

	return 0;
}