[英]How to use dirent.h correctly
I am new to C++ and I am experimenting with the dirent.h header to manipulate directory entries. 我是C ++的新手,我正在尝试使用dirent.h标头来处理目录条目。 The following little app compiles but pukes after you supple a directory name. 以下小应用程序可以编译,但是在您添加目录名称后会呕吐。 Can someone give me a hint? 有人可以给我提示吗? The int quit is there to provide a while loop. int quit提供了while循环。 I removed the loop in an attempt to isolate my problem. 为了解决我的问题,我删除了循环。
thanks! 谢谢!
#include <iostream>
#include <dirent.h>
using namespace std;
int main()
{
char *dirname = 0;
DIR *pd = 0;
struct dirent *pdirent = 0;
int quit = 1;
cout<< "Enter a directory path to open (leave blank to quit):\n";
cin >> dirname;
if(dirname == NULL)
{
quit = 0;
}
pd = opendir(dirname);
if(pd == NULL)
{
cout << "ERROR: Please provide a valid directory path.\n";
}
return 0;
}
If you are using C++, don't use char * or arrays, use std::string: 如果您使用的是C ++,请不要使用char *或数组,请使用std :: string:
#include <string>
....
string dirname;
cout<< "Enter a directory path to open (leave blank to quit):\n";
getline( cin, dirname );
if ( dirname == "" ) {
exit(1);
}
....
pd = opendir(dirname.c_str() );
Change: 更改:
char *dirname = 0;
to: 至:
char dirname[PATH_MAX] = "";
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