rename
From cppreference.com
Defined in header <stdio.h> | ||
int rename(constchar* old_filename, constchar* 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.
[edit]Example
Run this code
#include <stdio.h>#include <stdlib.h> int main(void){FILE* fp =fopen("from.txt", "w");// create file "from.txt"if(!fp){perror("from.txt");returnEXIT_FAILURE;}fputc('a', fp);// write to "from.txt"fclose(fp); int rc = rename("from.txt", "to.txt");if(rc){perror("rename");returnEXIT_FAILURE;} fp =fopen("to.txt", "r");if(!fp){perror("to.txt");returnEXIT_FAILURE;}printf("%c\n", fgetc(fp));// read from "to.txt"fclose(fp); returnEXIT_SUCCESS;}
Possible output:
a
[edit]References
- C23 standard (ISO/IEC 9899:2024):
- 7.21.4.2 The rename function (p: TBD)
- C17 standard (ISO/IEC 9899:2018):
- 7.21.4.2 The rename function (p: TBD)
- C11 standard (ISO/IEC 9899:2011):
- 7.21.4.2 The rename function (p: 302-303)
- C99 standard (ISO/IEC 9899:1999):
- 7.19.4.2 The rename function (p: 268-269)
- C89/C90 standard (ISO/IEC 9899:1990):
- 4.9.4.2 The rename function
[edit]See also
| erases a file (function) | |
C++ documentation for rename | |
