问题描述
亲爱的：
我正在尝试写一个文件，其中包含完整的目录名和文件名
指定（./outdir/mytestout.txt其中。是当前目录）
in
C编程语言和Unix下，但是出现了错误的错误
打开文件./outdir /mytestout.txt。以下是代码：
#include< stdio.h>
int main（无效）
{
FILE * fp;
char fname [30];
char pathname [30];
strcpy（fname，" ./ outdir /mytestout.txt"）;
fp = fopen（fname，" w"）;
if（fp == NULL）
{
printf（无法打开文件％s \ n，fname）;
}
其他
{
fprintf（fp，这只是一个测试）;
}
fclose（fp）;
返回0;
}
我也尝试用.\outdir
\ mytestout.txt"，或者，.// outdir // mytestout.txt或，，。\\outdir \
\ mytestout.txt"，甚至，。/ / outdir /// mytestout.txt等等，我还是
还是
试图用当前目录指定整个目录。
（点）替换为真实目录名，但都失败了。我在互联网上搜索了
，只找到一个相关的说明用完整路径指定
文件名，但是如何在
$ b下指定C中的完整路径$ b Unix？
请帮帮我。
感谢您的帮助。
Hongyu
Dear all:
I am trying to write to a file with full directory name and file name
specified (./outdir/mytestout.txt where . is the current directory)
in
C programming language and under Unix, but got errors of Failed to
open file ./outdir/mytestout.txt. Below is the code:
#include <stdio.h>
int main(void)
{
FILE *fp;
char fname[30];
char pathname[30];
strcpy(fname,"./outdir/mytestout.txt");
fp=fopen(fname, "w");
if (fp == NULL)
{
printf("Failed to open file %s\n", fname);
}
else
{
fprintf(fp, "This is just a test only");
}
fclose(fp);
return 0;
}
I also try to write filename and directory with ,".\outdir
\mytestout.txt", or ,".//outdir//mytestout.txt" or ",".\\outdir\
\mytestout.txt", or even ,".///outdir///mytestout.txt" etc, and I
also
tried to specify the whole directory with the current directory .
(dot) replaced by the real directory name, but all failed. I searched
on the internet and only found one relevant that said to specify
filename with full path, but how to specify full path in C under
Unix?
Please help me.
Thanks for the help in advance.
Hongyu
推荐答案
目录./outdir是否已经存在？
如果没有，你需要先创建目录 - 使用mkdir（）;
准备被传送到comp.sys.linux.programmer
-
Chris。
Does the directory ./outdir already exist?
If not, you''ll need to create the directory first - use mkdir();
Prepare to be teleported to comp.sys.linux.programmer
--
Chris.
然后你想要comp.unix.programmer，而不是comp.lang.c（虽然你的代码
是topical ）
Then you want comp.unix.programmer, not comp.lang.c (though your code
is topical)
fclose调用应该在else子句中。 fclose（NULL）不是由ISO C定义的
。（不要与free（NULL）混淆，_is_
定义并且什么都不做）
The fclose call should be in the else clause. fclose(NULL) is not
defined by ISO C. (not to be confused with free(NULL) which _is_
defined and does nothing)
猜猜：outdir存在吗？是否正确设置了权限
能够写出你想要写的文件吗？
无需猜测即可找到...
Guesses: does outdir exist? Are the permissions set correctly for you to
be able to write the file you want to write?
To find out without guessing...
....将此行更改为
perror（" fopen"）;
并查看您收到的错误消息。
....change this line to
perror("fopen");
and see what error message you get.
这篇关于如何在Unix下写入包含C语句的完整目录的文件？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！