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#include <iostream>streamsize width() const;streamsize width(streamsize w);
The width( ) function is a member of ios (inherited from ios_base).
To obtain the current field width, use the first form of width( ). It returns the current field width. To set the field width, use the second form. Here, w becomes the field width, and the previous field width is returned.
Related functions are precision( ) and fill( ).
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