有用但不常见的c＋＋函数

 1、

#include<iostream.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>

void main( void )
{
	struct stat buf;
	int result;

	//获得c:\Windows\Calc.exe文件的信息
	result =stat( "c:\\windows\\Calc.exe", &buf );

	//显示cal.exe的文件状态信息
	if( result != 0 )
		perror( "Problem getting information" );
	else
	{
		cout<<"Size of the file in bytes:"<<buf.st_size<<endl;
		cout<<"Drive number of the disk containing the file :";
		cout<<char(buf.st_dev + 'A')<<endl;
		cout<<"Time of creation of the file:" << ctime(&buf.st_ctime);
		cout<<"Time of last access of the file:" << ctime(&buf.st_atime);
		cout<<"Time of last modification of the file:" << ctime(&buf.st_mtime);
	}
}

　　

2、

#include<iostream.h>
#include<direct.h>
#include<errno.h>
#define MAX_PATH 250
int _tmain(int argc, _TCHAR* argv[])
{
	char* p, str[MAX_PATH];
	//创建新目录
	if (mkdir("E:\\ABC"))
	{
		cout << "mkdir Error!" << endl;
	}
	//更改工作目录
	if (chdir("E:\\ABC"))
	{
		cout << "chdir Error!" << endl;
	}

	//读取当前的目录
	if ((p = getcwd(str,MAX_PATH))==NULL)
	{
		cout << "getcwd Error!" << endl;
	}
	else
	{
		cout << "p: " << p<< endl;
		cout << "str: " << str << endl;
	}

	//更改工作目录
	if (chdir("E:\\"))
	{
		cout << "chdir Error!" << endl;
	}

	//删除指定目录,如果目录为工作目录，则不能删除
	if (rmdir("E:\\ABC")==-1) 
		cout<<"rmdir Error!"<<endl;

	return 0;


}

　原文：http://www.cppblog.com/mzty/archive/2005/11/04/936.html