Obtaining file size : file utilities « File Stream « C++ Tutorial

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C++ Tutorial » File Stream » file utilities

12.7.3.Obtaining file size

#include <iostream.h>

#include <fstream.h>



const char * filename = "test.txt";



int main () {

  long l,m;

  ifstream file (filename, ios::in|ios::binary);

  

  l = file.tellg();

  

  file.seekg (0, ios::end);

  m = file.tellg();

  

  file.close();

  

  cout << "size of " << filename;

  

  cout << " is " << (m-l) << " bytes.\n";

  

  return 0;

}

size of test.txt is 40 bytes.

12.7.file utilities
	12.7.1.	Use ifstream and ofstream to copy file
	12.7.2.	Check file status
	12.7.3.	Obtaining file size
	12.7.4.	A file comparision utility.
	12.7.5.	Get file information: size, device, creation time and last modification time
	12.7.6.	Count number of lines of all files passed as argument
	12.7.7.	Copying one file into another:
	12.7.8.	A simple file-comparison utility.

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