Copying, Renaming and Deleting files in C

File manipulation in C programming involves various operations like copying, renaming, and deleting files. These actions are performed using functions available in the standard C library and can be vital for managing and organizing files in your applications. Below are details and examples of these operations:

Copying Files in C

To copy a file in C, you can open the source file for reading and the destination file for writing, then read data from the source and write it to the destination. Here's an example:

#include <stdio.h> int main() { FILE* source = fopen("source.txt", "rb"); FILE* destination = fopen("destination.txt", "wb"); if (source == NULL destination == NULL) { perror("File opening failed"); return 1; } char buffer[1024]; size_t bytes_read; while ((bytes_read = fread(buffer, 1, sizeof(buffer), source)) > 0) { fwrite(buffer, 1, bytes_read, destination); } fclose(source); fclose(destination); return 0; }

Renaming Files in C

To rename a file, you can use the rename function, which takes the old filename and the new filename as arguments.

#include <stdio.h> int main() { if (rename("oldfile.txt", "newfile.txt") == 0) { printf("File renamed successfully\n"); } else { perror("File renaming failed"); } return 0; }

Deleting Files in C

To delete a file in C, you can use the remove function, which takes the filename as an argument.

#include <stdio.h> int main() { if (remove("filetodelete.txt") == 0) { printf("File deleted successfully\n"); } else { perror("File deletion failed"); } return 0; }

It's important to handle errors when performing file manipulation operations, as they can fail due to various reasons, such as file not found or insufficient permissions. The examples above include error handling using perror to provide meaningful error messages when issues occur during file operations.

Remember to always check the return values of file operations for success or failure, and handle any errors appropriately to ensure robust and reliable file manipulation in your C programs.


File manipulation in C programming, including copying, renaming, and deleting files, is essential for managing and organizing data. Copying files involves reading from a source file and writing to a destination file, renaming is accomplished using the rename function, and file deletion is performed using the remove function. These operations should be accompanied by proper error handling to ensure the reliability and integrity of file management in C programs.