remove
在头文件<stdio.h>中定义 | | |
---|---|---|
int remove(const char * fname); | | |
Deletes the file identified by character string pointed to by fname
.
如果该文件当前由该进程或其他进程打开,则此函数的行为是由实现定义的(特别是,POSIX系统取消链接文件名,尽管在上次运行进程关闭文件之前文件系统空间不会被回收; Windows会不允许删除文件)。
参数
FNAME | - | 指向包含标识要删除的文件的路径的以空字符结尾的字符串 |
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返回值
0
一旦成功或错误发生非零值。
注意
Example
#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");
}
输出:
Created file1.txt
Removed file1.txt
Opening removed file failed: No such file or directory
Double-remove failed: No such file or directory
参考
- C11标准(ISO / IEC 9899:2011):
- 7.21.4.1删除功能(p:302)
- C99标准(ISO / IEC 9899:1999):
- 7.19.4.1删除功能(p:268)
- C89 / C90标准(ISO / IEC 9899:1990):
- 4.9.4.1删除功能
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