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- // File from page 245 in "Thinking in C++" by Bruce Eckel
- //////////////////////////////////////////////////
- // From the compressed package ECKELT01.ZIP 2/21/95
- // Copyright (c) Bruce Eckel, 1995
- // Source code file from the book "Thinking in C++",
- // Prentice Hall, 1995, ISBN: 0-13-917709-4
- // All rights reserved EXCEPT as allowed by the following
- // statements: You may freely use this file for your own
- // work, including modifications and distribution in
- // executable form only. You may copy and distribute this
- // file, as long as it is only distributed in the complete
- // (compressed) package with the other files from this
- // book and you do not remove this copyright and notice.
- // You may not distribute modified versions of the source
- // code in this package. This package may be freely placed
- // on bulletin boards, internet nodes, shareware disks and
- // product vendor disks. You may not use this file in
- // printed media without the express permission of the
- // author. Bruce Eckel makes no
- // representation about the suitability of this software
- // for any purpose. It is provided "as is" without express
- // or implied warranty of any kind. The entire risk as to
- // the quality and performance of the software is with
- // you. Should the software prove defective, you assume
- // the cost of all necessary servicing, repair, or
- // correction.
- // If you think you've found an error, please
- // email all modified files with loudly commented changes
- // to: eckel@aol.com (please use the same
- // address for non-code errors found in the book).
- //////////////////////////////////////////////////
-
- //: MANIPS.CPP -- FORMAT.CPP using manipulators
- #include <fstream.h>
- #include <iomanip.h>
-
- main() {
- ofstream T("trace.out");
- int i = 47;
- float f = 2300114.414159;
- char* s = "Is there any more?";
-
- T << setiosflags(
- ios::unitbuf | ios::stdio
- | ios::showbase | ios::uppercase
- | ios::showpos
- );
- T << i << endl; // Default to dec
- T << hex << i << endl;
- T << resetiosflags(ios::uppercase)
- << oct << i << endl;
- T.setf(ios::left, ios::adjustfield);
- T << resetiosflags(ios::showbase)
- << dec << setfill('0');
- T << "fill char: " << T.fill() << endl;
- T << setw(10) << i << endl;
- T.setf(ios::right, ios::adjustfield);
- T << setw(10) << i << endl;
- T.setf(ios::internal, ios::adjustfield);
- T << setw(10) << i << endl;
- T << i << endl; // Without setw(10)
-
- T << resetiosflags(ios::showpos)
- << setiosflags(ios::showpoint)
- << "prec = " << T.precision() << endl;
- T.setf(ios::scientific, ios::floatfield);
- T << f << endl;
- T.setf(ios::fixed, ios::floatfield);
- T << f << endl;
- T.setf(0, ios::floatfield); // Automatic
- T << f << endl;
- T << setprecision(20);
- T << "prec = " << T.precision() << endl;
- T << f << endl;
- T.setf(ios::scientific, ios::floatfield);
- T << f << endl;
- T.setf(ios::fixed, ios::floatfield);
- T << f << endl;
- T.setf(0, ios::floatfield); // Automatic
- T << f << endl;
-
- T << setw(10) << s << endl;
- T << setw(40) << s << endl;
- T.setf(ios::left, ios::adjustfield);
- T << setw(40) << s << endl;
-
- T << resetiosflags(
- ios::showpoint | ios::unitbuf
- | ios::stdio
- );
- }
-