remove
From cppreference.com
| Defined in header <stdio.h>
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| int remove( const char *fname ); |
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Deletes the file identified by character string pointed to by fname.
If the file is currently open by this or another process, the behavior of this function is implementation-defined (in particular, POSIX systems unlink the file name although the file system space is not reclaimed until the last running process closes the file; Windows does not allow the file to be deleted).
Contents |
[edit] Parameters
| fname | - | pointer to a null-terminated string containing the path identifying the file to delete |
[edit] Return value
0 upon success or non-zero value on error.
[edit] Notes
POSIX specifies many additional details for the behavior of this function.
[edit] Example
Run this code
#include <stdio.h> int main(void) { FILE* fp = fopen("file1.txt", "w"); // create file if(!fp) { perror("file1.txt"); return 1; } puts("Created file1.txt"); fclose(fp); int rc = remove("file1.txt"); if(rc) { perror("remove"); return 1; } puts("Removed file1.txt"); fp = fopen("file1.txt", "r"); // Failure: file does not exist if(!fp) perror("Opening removed file failed"); rc = remove("file1.txt"); // Failure: file does not exist if(rc) perror("Double-remove failed"); }
Output:
Created file1.txt Removed file1.txt Opening removed file failed: No such file or directory Double-remove failed: No such file or directory
[edit] References
- C11 standard (ISO/IEC 9899:2011):
- 7.21.4.1 The remove function (p: 302)
- C99 standard (ISO/IEC 9899:1999):
- 7.19.4.1 The remove function (p: 268)
- C89/C90 standard (ISO/IEC 9899:1990):
- 4.9.4.1 The remove function
[edit] See also
| renames a file (function) | |
| C++ documentation for remove
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