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在头文件<stdio.h>中定义 | ||
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int remove(const char * fname); |
Deletes the file identified by character string pointed to by fname
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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)。
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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0
一旦成功或错误发生非零值。
POSIX为这个函数的行为指定了许多额外的细节。
#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
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