std::rename
From cppreference.com
| Defined in header <cstdio>
|
||
| int rename( const char *old_filename, const char *new_filename ); |
||
Changes the filename of a file. The file is identified by character string pointed to by old_filename. The new filename is identified by character string pointed to by new_filename.
If new_filename exists, the behavior is implementation-defined.
Contents |
[edit] Parameters
| old_filename | - | pointer to a null-terminated string containing the path identifying the file to rename |
| new_filename | - | pointer to a null-terminated string containing the new path of the file |
[edit] Return value
0 upon success or non-zero value on error.
[edit] Notes
POSIX specifies many additional details on the semantics of this function, which are reproduced in C++ by std::experimental::filesystem::rename.
[edit] Example
Run this code
#include <iostream> #include <fstream> #include <cstdio> int main() { bool ok = std::ofstream("from.txt").put('a'); // create and write to file if(!ok) { std::perror("Error creating from.txt"); return 1; } int rc = std::rename("from.txt", "to.txt"); if(rc) { std::perror("Error renaming"); return 1; } std::cout << std::ifstream("to.txt").rdbuf() << '\n'; // print file }
Output:
a
[edit] See also
| moves or renames a file or directory (function) | |
| erases a file (function) | |
| C documentation for rename
| |
