blocks|key|1687245|text|查找getcwd的手册页。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1687246|entityMap^0|2|6|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

Look up the man page for <code>getcwd</code>.

blocks|key|1687265|text|你看过getcwd()吗？|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1687266|#include+<unistd.h>
char+*getcwd(char+*buf,+size_t+size);|code-block|syntax|javascript|1687267|简单的例子：|1687268|#include+<unistd.h>
#include+<stdio.h>
#include+<limits.h>

int+main()+{
+++char+cwd[PATH_MAX];
+++if+(getcwd(cwd,+sizeof(cwd))+!=+NULL)+{
+++++++printf("Current+working+dir:+%25s\n",+cwd);
+++}+else+{
+++++++perror("getcwd()+error");
+++++++return+1;
+++}
+++return+0;
}|1687269|entityMap|0|LINK|mutability|MUTABLE|url|http://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html^0|3|8|3|8|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|F|3|G|5|H|7|12|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|13|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|14|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

Have you had a look at <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html" rel="noreferrer"><code>getcwd()</code></a>?

<pre><code>#include &lt;unistd.h&gt;
char *getcwd(char *buf, size_t size);
</code></pre>

Simple example:

<pre><code>#include &lt;unistd.h&gt;
#include &lt;stdio.h&gt;
#include &lt;limits.h&gt;

int main() {
 char cwd[PATH_MAX];
 if (getcwd(cwd, sizeof(cwd)) != NULL) {
 printf("Current working dir: %s\n", cwd);
 } else {
 perror("getcwd() error");
 return 1;
 }
 return 0;
}
</code></pre>

blocks|key|1687327|text|请注意，微软的libc：getcwd(3)中也提供了getcwd(3)，它的工作方式与您预期的一样。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1687328|必须链接到-loldnames+(oldnames.lib，大多数情况下是自动完成的)，或者使用_getcwd()。无前缀版本在Windows+RT下不可用。|1687329|entityMap|0|LINK|mutability|MUTABLE|url|https://msdn.microsoft.com/en-us/library/sf98bd4y(v=vs.90).aspx)^0|Q|9|C|9|0|0|5|A|1C|9|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@$9|S|A|T|1|U]]|E|$]]|$1|F|3|G|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

Note that <code>getcwd(3)</code> is also available in Microsoft's libc: <a href="https://msdn.microsoft.com/en-us/library/sf98bd4y(v=vs.90).aspx" rel="nofollow noreferrer">getcwd(3)</a>, and works the same way you'd expect.

Must link with <code>-loldnames</code> (oldnames.lib, which is done automatically in most cases), or use <code>_getcwd()</code>. The unprefixed version is unavailable under Windows RT.

blocks|key|1472227|text|#include+<stdio.h>++/*+defines+FILENAME_MAX+*/
//#define+WINDOWS++/*+uncomment+this+line+to+use+it+for+windows.*/
#ifdef+WINDOWS
#include+<direct.h>
#define+GetCurrentDir+_getcwd
#else
#include+<unistd.h>
#define+GetCurrentDir+getcwd
#endif

int+main(){
++char+buff[FILENAME_MAX];
++GetCurrentDir(+buff,+FILENAME_MAX+);
++printf("Current+working+dir:+%25s\n",+buff);
++return+1;
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1472228|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>#include &lt;stdio.h&gt; /* defines FILENAME_MAX */
//#define WINDOWS /* uncomment this line to use it for windows.*/
#ifdef WINDOWS
#include &lt;direct.h&gt;
#define GetCurrentDir _getcwd
#else
#include &lt;unistd.h&gt;
#define GetCurrentDir getcwd
#endif

int main(){
 char buff[FILENAME_MAX];
 GetCurrentDir( buff, FILENAME_MAX );
 printf("Current working dir: %s\n", buff);
 return 1;
}
</code></pre>

blocks|key|1472312|text|要获取当前目录(执行目标程序的位置)，您可以使用以下示例代码，它既适用于Visual+Studio，也适用于Linux/MacOS(gcc/clang)，适用于C和C%2B%2B：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1472313|#include+<stdio.h>
#include+<stdlib.h>
#include+<string.h>

#if+defined(_MSC_VER)
#include+<direct.h>
#define+getcwd+_getcwd
#elif+defined(__GNUC__)
#include+<unistd.h>
#endif

int+main()+{
++++char*+buffer;

++++if(+(buffer=getcwd(NULL,+0))+==+NULL)+{
++++++++perror("failed+to+get+current+directory\n");
++++}+else+{
++++++++printf("%25s+\nLength:+%25zu\n",+buffer,+strlen(buffer));
++++++++free(buffer);
++++}

++++return+0;
}|code-block|syntax|javascript|1472314|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

To get current directory (where you execute your target program), you can use the following example code, which works for both Visual Studio and Linux/MacOS(gcc/clang), both C and C++:

<pre><code>#include &lt;stdio.h&gt;
#include &lt;stdlib.h&gt;
#include &lt;string.h&gt;

#if defined(_MSC_VER)
#include &lt;direct.h&gt;
#define getcwd _getcwd
#elif defined(__GNUC__)
#include &lt;unistd.h&gt;
#endif

int main() {
 char* buffer;

 if( (buffer=getcwd(NULL, 0)) == NULL) {
 perror("failed to get current directory\n");
 } else {
 printf("%s \nLength: %zu\n", buffer, strlen(buffer));
 free(buffer);
 }

 return 0;
}
</code></pre>

I'm making a C program where I need to get the directory that the program is started from. This program is written for UNIX computers. I've been looking at <code>opendir()</code> and <code>telldir()</code>, but <code>telldir()</code> returns a <code>off_t (long int)</code>, so it really doesn't help me. 

How can I get the current path in a string (char array)?

How to get the current directory in a C program?

Visual Studio

Windows

Linux

MacOS

我正在编写一个C程序，其中我需要获取启动该程序的目录。这个程序是为UNIX计算机编写的。我一直在寻找opendir()和telldir()，但是telldir()返回了一个off_t (long int)，所以它对我没有什么帮助。如何获取字符串(char数组)中的当前路径？

问如何在C程序中获取当前目录？
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