how to check size of file in c++

Checking the Size of a File in C++

To check the size of a file in C++, you can use the following steps:

1. Include Necessary Header Files:cpp #include <iostream> #include <fstream>

2. Open the File and Move File Pointer to the End:cpp std::ifstream file("filename.txt", std::ios::binary | std::ios::ate);

3. Get the Size of the File:cpp std::streampos fileSize = file.tellg();

4. Output the Size of the File:cpp if (fileSize != -1) { std::cout << "File size is: " << fileSize << " bytes" << std::endl; } else { std::cout << "Error: Unable to get file size." << std::endl; }

5. Close the File:cpp file.close();

These steps involve including the necessary header files, opening the file in binary mode and moving the file pointer to the end, getting the file size, outputting the size, and closing the file.