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Function Details : rename

intrename(const char * oldname,const char * newname) ;

Return Type : int

Integer type (typically 4 bytes, -2,147,483,648 to 2,147,483,647)
Read about return values of rename function .

1st Parameter Type : const char *

Pointer to read-only string

1st Parameter

Pointer to a null-terminated string containing the name of the file or directory to be renamed.

2nd Parameter Type : const char *

Pointer to read-only string

2nd Parameter

Pointer to a null-terminated string containing the new name for the file or directory.

Read more about parameters of rename in parameters section
The renamefunction in C language Renames a file or directory.
The rename function changes the name of a file or directory. It can also be used to move a file between directories on the same file system. If a file with the new name already exists, it may be overwritten depending on the system and implementation.
The renamefunction takes 2 parameters:
  • •
    const char * `oldname`: Pointer to a null-terminated string containing the name of the file or directory to be renamed.
  • •
    const char * `newname`: Pointer to a null-terminated string containing the new name for the file or directory.
Renames the file or directory specified by `oldname` to `newname`. If `newname` already exists, its behavior is implementation-defined, but it may overwrite the existing file or directory. Returns `0` on success or a nonzero value on failure, with `errno` set to indicate the error.
The rename function return value :
  • Returns 0 if the file was successfully renamed, non-zero if an error occurred

Output

This example creates a file, closes it, and then renames it using the rename function.