Sets the length of the output stream.
streamsize width( ) const; 
streamsize width(
   streamsize _Wide
);
Parameters
- _Wide
 The desired size of the output stream.
Return Value
The current width setting.
Remarks
The first member function returns the stored field width. The second member function stores _Wide in the field width and returns its previous stored value.
Example
// ios_base_width.cpp
// compile with: /EHsc
#include <iostream>
int main( ) {
   using namespace std;
   
   cout.width( 20 );
   cout << cout.width( ) << endl;
   cout << cout.width( ) << endl;
}
20 0
Requirements
Header: <ios>
Namespace: std