c++ 一日一练:利用文件流缓冲区

xiaoxiao2021-02-28  91

// open and close a file using buffer members #include <fstream> using namespace std; int main () { char ch; fstream filestr; filebuf *pbuf; pbuf=filestr.rdbuf(); pbuf->open ("test.txt", fstream::in | fstream::out); // >> i/o operations here << pbuf->close(); return 0; }

重要指示:

      把文件打开到缓冲区中。。。过程如下:

 

      文件-------》缓冲区-------》流

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