Reference
C Library
IOstream Library
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IOstream Library
manipulators
classes:
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ios
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objects:
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types:
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ios
ios::ios
ios::~ios
member functions:
ios::bad
ios::clear
ios::copyfmt
ios::eof
ios::exceptions
ios::fail
ios::fill
ios::good
ios::imbue
ios::init
ios::narrow
ios::operator!
ios::operator void*
ios::rdbuf
ios::rdstate
ios::setstate
ios::tie
ios::widen


ios::fill

public member function
char fill ( ) const;
char fill ( char fillch );

Get/set the fill character

The first function version returns the fill character.

The second function version sets fillch as the new fill character and returns the fill character previously set.

The fill character is the character used by output insertion functions to fill spaces when padding results to the field width.

The parameterized manipulator setfill can also be used to set the fill character.

Parameters

fillch
the new character to be used as fill character.

Return Value

The value of the fill character before the call.

Example

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// using the fill character
#include <iostream>
using namespace std;
int main () {
  char prev;
  cout.width (10);
  cout << 40 << endl;
  prev = cout.fill ('x');
  cout.width (10);
  cout << 40 << endl;
  cout.fill(prev);
  return 0;
}


The output of this example is something similar to: 
        40
xxxxxxxx40

Basic template member declaration

( basic_ios<charT,traits> )
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typedef charT char_type;
char_type fill () const;
char_type fill ( char_type fillch );


See also

setfill Set fill character (manipulator function)
ios_base::width Get/set field width (public member function)