<iomanip>


namespace std {
T1 resetiosflags(ios_base::fmtflags mask);
T2 setiosflags(ios_base::fmtflags mask);
T3 setbase(int base);
T4 setfill(char c);
T5 setprecision(streamsize n);
T6 setw(streamsize n);
    };

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);

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 fillch);

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


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Copyright © 1992-1996 by P.J. Plauger. All rights reserved.