How to resolve the algorithm Delete a file step by step in the C++ programming language

Published on 7 June 2024 03:52 AM

How to resolve the algorithm Delete a file step by step in the C++ programming language

Table of Contents

Problem Statement

Delete a file called "input.txt" and delete a directory called "docs". This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Delete a file step by step in the C++ programming language

The provided C++ code performs the following file system operations:

  1. Remove Files:

    • remove("input.txt"): This line attempts to delete a file named "input.txt" in the current working directory.
    • remove("/input.txt"): This line attempts to delete a file named "input.txt" in the root directory of the drive.
  2. Remove Directories:

    • _rmdir("docs"): This line attempts to remove a directory named "docs" in the current working directory. On Windows, _rmdir is used for directory removal.
    • _rmdir("/docs"): This line attempts to remove a directory named "docs" in the root directory of the drive.

Additional Notes:

  • The _rmdir function is specific to the Windows operating system. It is used for removing empty directories.
  • The / character in the file and directory paths specifies an absolute path, starting from the root of the drive.
  • If the files or directories do not exist or cannot be deleted, the remove and _rmdir functions will return an error. No error handling is included in this code.
  • This code does not perform any input validation or handle potential errors, such as attempting to delete a file or directory that is currently in use. In a production environment, proper error handling and input validation should be implemented.

Source code in the cpp programming language

#include <cstdio>
#include <direct.h>

int main() {
	remove( "input.txt" );
	remove( "/input.txt" );
	_rmdir( "docs" );
	_rmdir( "/docs" );

	return 0;
}


  

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