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:
-
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.
-
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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