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Caution: This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs.

<iomanip>


Include the iostreams standard header <iomanip> to define several manipulators that each take a single argument. Each of these manipulators returns an unspecified type, called T1 through T6 here, that overloads both istream::operator>> and ostream::operator<<. Thus, you can write extractors and inserters such as:

cin >> setbase(8);
cout << setbase(8);
        // DECLARATIONS
T1 resetiosflags(ios_base::fmtflags mask);
T2 setiosflags(ios_base::fmtflags mask);
T3 setbase(int base);
T4 setfill(char ch);
T5 setprecision(streamsize prec);
T6 setw(streamsize wide);
        // END OF DECLARATIONS

resetiosflags

T1 resetiosflags(ios_base::fmtflags mask);

The manipulator returns an object that, when extracted from or inserted into the stream str, calls str.setf(ios_base:: fmtflags(), mask), then returns str.

setbase

T3 setbase(int base);

The manipulator returns an object that, when extracted from or inserted into the stream str, calls str.setf(mask, ios_base::basefield), then returns str. Here, mask is determined as follows:

setfill

T4 setfill(char ch);

The manipulator returns an object that, when extracted from or inserted into the stream str, calls str.fill(ch), then returns str.

setiosflags

T2 setiosflags(ios_base::fmtflags mask);

The manipulator returns an object that, when extracted from or inserted into the stream str, calls str.setf(mask), then returns str.

setprecision

T5 setprecision(streamsize prec);

The manipulator returns an object that, when extracted from or inserted into the stream str, calls str.precision(prec), then returns str.

setw

T6 setw(streamsize wide);

The manipulator returns an object that, when extracted from or inserted into the stream str, calls str.width(wide), then returns str.


See also the Table of Contents and the Index.

Copyright © 1992-2002 by P.J. Plauger. All rights reserved.

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