Defined in header <stdio.h> | ||
|---|---|---|
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.
| 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 |
0 upon success or non-zero value on error.
POSIX specifies many additional details on the semantics of this function.
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
FILE* fp = fopen("from.txt", "w"); // create file "from.txt"
if (!fp)
{
perror("from.txt");
return EXIT_FAILURE;
}
fputc('a', fp); // write to "from.txt"
fclose(fp);
int rc = rename("from.txt", "to.txt");
if (rc)
{
perror("rename");
return EXIT_FAILURE;
}
fp = fopen("to.txt", "r");
if(!fp)
{
perror("to.txt");
return EXIT_FAILURE;
}
printf("%c\n", fgetc(fp)); // read from "to.txt"
fclose(fp);
return EXIT_SUCCESS;
}Possible output:
a
| erases a file (function) |
|
C++ documentation for rename |
|
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