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Defined in header <cstdio> | ||
int remove(constchar* pathname); | ||
Deletes the file identified by the character string pointed to bypathname.
If the file is currently open by any process, the behavior of this function is implementation-defined. POSIX systems unlink the file name (directory entry), but the filesystem space used by the file is not reclaimed while it is open in any process and while other hard links to the file exist. Windows does not allow the file to be deleted in such cases.
Contents |
| pathname | - | pointer to a null-terminated string containing the path identifying the file to delete |
0 upon success or non-zero value on error.
POSIX specifies many additional details for the behavior of this function.
The standard library also defines a function templatestd::remove taking a pair of iterators and a value, this overload is one of the standardalgorithms.
#include <cstdio>#include <cstdlib>#include <fstream>#include <iostream> int main(){// create a file, check success using operator! of temporary stream objectif(!std::ofstream("file1.txt").put('a')){std::perror("Error creating file1.txt");returnEXIT_FAILURE;}std::cout<<std::ifstream("file1.txt").rdbuf()<<'\n';// print file std::remove("file1.txt");// delete file if(!std::ifstream{"file1.txt"})// uses operator! of temporary stream object{std::perror("Error opening deleted file");returnEXIT_FAILURE;}returnEXIT_SUCCESS;}
Possible output:
aError opening deleted file: No such file or directory
(C++17)(C++17) | removes a file or empty directory removes a file or directory and all its contents, recursively (function)[edit] |
| renames a file (function)[edit] | |
C documentation forremove | |
