How to perform file operations: Get File Name: Open File: Move file pointer .........

Get the file name {cstring filepathname; cfiledialog DLG (true); // true: Open dialog box, false: Save As dialog box if (DLG. domodal () = idok) filepathname = DLG. getpathname ();} related information: cfiledialog is used to retrieve several member functions of a file name. For example, if the selected file is C:/Windows/test. EXE: (1) getpathname (); takes the full name of the file name, including the complete path. Retrieve C:/Windows/test. EXE (2) getfiletitle (); get the full name of the file: test. EXE (3) getfilename (); Retrieve test (4) getfileext (); Retrieve extension exe

Open the cfile file ("C:/hello. TXT ", cfile: moderead); // open in read-only mode // cfile: moderead can be changed to cfile: modewrite (write only), cfile :: modereadwrite (read/write), cfile: modecreate (new) Example: {cfile file; file. open ("C:/hello. TXT ", cfile: modecreate | cfile: modewrite );......}

Move file pointer file. seek (100, cfile: Begin); // start from the file header and move down the 100-byte file. seek (-50, cfile: End); // move 50 bytes of file from the end of the file. seek (-30, cfile: Current); // move up 30 bytes of file from the current position. seektobegin (); // move to the file header file. seektoend (); // move to the end of the file

Read/write files: Char buffer [1000]; file. read (buffer, 1000); Write File: cstring string ("this world can only succeed if it is paranoid"); file. write (string, 8 );

Close file. Close ();