use_sbuf.cpp

使用streambuf操作文件

最新推荐文章于 2022-11-15 14:10:17 发布

原创最新推荐文章于 2022-11-15 14:10:17 发布 · 545 阅读

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#input #output #ios #c

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name="google_ads_frame" marginwidth="0" marginheight="0" src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-5572165936844014&dt=1194442938015&lmt=1194190197&format=336x280_as&output=html&correlator=1194442937843&url=file%3A%2F%2F%2FC%3A%2FDocuments%2520and%2520Settings%2Flhh1%2F%E6%A1%8C%E9%9D%A2%2FCLanguage.htm&color_bg=FFFFFF&color_text=000000&color_link=000000&color_url=FFFFFF&color_border=FFFFFF&ad_type=text&ga_vid=583001034.1194442938&ga_sid=1194442938&ga_hid=1942779085&flash=9&u_h=768&u_w=1024&u_ah=740&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameborder="0" width="336" scrolling="no" height="280" allowtransparency="allowtransparency"> // Operations with streambufs.
#include <iostream.h>
#include <fstream.h>

void main(void)
{
   int c;
   const char *filename = "_junk_.$$$";
   ofstream outfile;
   streambuf *out, *input = cin.rdbuf();

   // Position at the end of file. Append all text.
   outfile.open( filename, ios::ate | ios::app);
   if (!outfile)
    {
      cerr << "Could not open " << filename;
      return(-1);
    }

out = outfile.rdbuf(); // Connect ofstream and streambuf.

   clog << "Input some text. Use Control-Z to end." << endl;
   while ( (c = input -> sbumpc() ) != EOF)
    {
      cout << char(c);                         // Echo to screen.
      if (out -> sputc(c) == EOF)
         cerr << "Output error";
      }
}