Open a file as binary file and get its size : file open mode « File Stream « C++ Tutorial

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C++ Tutorial » File Stream » file open mode

12.5.3.Open a file as binary file and get its size

#include <fstream>

#include <iostream>

using namespace std;



int main () 

{

  long start,end;

  ifstream myfile ("test.txt", ios::in|ios::binary);

  

  start = myfile.tellg();

  myfile.seekg (0, ios::end);

  end = myfile.tellg();

  myfile.close();

  

  cout << "size of " << "test.txt";

  cout << " is " << (end-start) << " bytes.\n";

  return 0;

}

size of test.txt is 25 bytes.

12.5.file open mode
	12.5.1.	Open a file for input and read in its content
	12.5.2.	Open a file for appending and append
	12.5.3.	Open a file as binary file and get its size
	12.5.4.	Opening text Files for Read and Write
	12.5.5.	Appending to the End of a File
	12.5.6.	Opening files for read and write.

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