C++ Manipulator right

C++ manipulator right function is used to set the adjustfield format flag for the str stream to right.

When we set adjustfiled to right, the output is padded to the field width by inserting fill characters at the beginning, effectively adjusting the field to the right.

Syntax

Parameter

str: stream object whose format flag is affected.

Return value

It returns argument str.

Data Races

Data races may cause when modifies str concurrent access to the same stream object.

Exceptions

str is in a valid state, if an exception is thrown.

Example 1

Let's see the simple example to demonstrate the use of right manipulator:

#include <iostream>     // std::cout, std::internal, std::left, std::right
using namespace std;

int main () {
  int n = -24;
  cout.width(6); 
  cout << internal << n << '\n';
  
  cout.width(6); 
  cout << left << n << '\n';
  
  cout.width(6); 
  cout << right << n << '\n';
  return 0;
}

Output:

-   24
-24   
   -24

Example 2

Let's see another simple example:

#include <iostream>

int main( )
{
   using namespace std;
   double f1= 5.00;
   cout << f1 << endl;
   cout.width( 20 );
   cout << f1 << endl;
   cout.width( 20 );
   cout << left << f1 << endl;
   cout.width( 20 );
   cout << f1 << endl;
   cout.width( 20 );
   cout << right << f1 << endl;
   cout.width( 20 );
   cout << f1 << endl;
   return 0;
}

Output:

Example 3

Let's see another simple example:

#include <iostream>
#include <iomanip>
#include <locale>
using namespace std; 

int main()
{
    cout.imbue(locale("en_US.utf8"));
    cout << "Left fill:\n" << left << setfill('*')
              << setw(12) << -1.23  << '\n'
              << setw(12) << hex << showbase << 42 << '\n'
              << setw(12) << put_money(123, true) << "\n\n";
 
    cout << "Internal fill:\n" << internal
              << setw(12) << -1.23  << '\n'
              << setw(12) << 42 << '\n'
              << setw(12) << put_money(123, true) << "\n\n";
 
    cout << "Right fill:\n" << right
              << setw(12) << -1.23  << '\n'
              << setw(12) << 42 << '\n'
              << setw(12) << put_money(123, true) << '\n';
return 0;
}

Output:

Left fill:
-1.23*******
0x2a********
USD *1.23***

Internal fill:
-*******1.23
0x********2a
USD ****1.23

Right fill:
*******-1.23
********0x2a
***USD *1.23

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