Error message: "setw is not defined" using g++

Question

I am trying to compile using gcc a project which earlier used SunStudio and am getting an error in the following code:

ostream & operator << ( ostream & os, const UtlDuration & d ) {     if ( d._nsec == 0 )     {         os << d._sec << " sec";         return os;     }     else     {         cout.fill( '0' );                 os << d._sec << "." << std::setw(9) << d._nsec << " sec";         cout.fill( ' ' );         return os;     } } 

Error: “setw” is not a member of “std”

I am not able to resolve this error can someone please explain me reason behind this error

Answer 1

You need to include the header which declares it:

#include <iomanip> 

Answer 2

Do following two steps:

1. include iomanip
2. write std::setw() instead of setw()

Compile and enjoy...