manipulators

In Stroustrup's C++ book, there is an example of a custom manipulator taking an argument (pls see the attached code). I am confused about how the struct is created. In particular, it looks like there are two int arguments for the constructor of "smanip", one for the function pointer "ff", one for "ii". I don't understand how the int argument is passed to create the structure by using: cout << setprecision(4) << angle; In addition, what is the order these functions get called, and how the the type arguments Ch and Tr are determined? Thanks a lot. // manipulator taking arguments struct smanip{

I'm trying to write a stream manipulator with arguments. I have class with 3 int's CDate(Year, Month, Day). So I need to make manipulator date_format(const char*) . e.g. : CDate a(2006, 5, 15); cout <<"DATE IS : " << date_format("%Y-hello-%d-world-%m-something-%d%d") << a; Output will be : DATE IS : 2006-hello-15-world-5-something-1515 Guess i need to use that ios_base & dummy_date_format_manipulator ( ios_base & x ) { return x; } ios_base & ( * ( date_format ( const char * fmt ) ) )( ios_base & x ) { return dummy_date_format_manipulator; } but i don't know how. You can use pword array for

This question already has an answer here: Restore the state of std::cout after manipulating it 6 answers I've got a line of code that sets the fill value to a '-' character in my output, but need to reset the setfill flag to its default whitespace character. How do I do that? cout << setw(14) << " CHARGE/ROOM" << endl; cout << setfill('-') << setw(11) << '-' << " " << setw(15) << '-' << " " << setw(11) << '-' << endl; I thought this might work: cout.unsetf(ios::manipulatorname) // Howerver I dont see a manipulator called setfill Am I on the wrong track? Éric Malenfant Have a look at the Boost

I am refactoring some legacy code which is using printf with longs strings (without any actual formatting) to print out plain text table headers which looks notionally like this: | Table | Column | Header | which are currently being produced like this: printf("| Table | Column | Header |"); I would like to produce the above with code to the effect of 1 : outputStream << "|" << std::setw(10) << std::center << "Table" << "|" << std::setw(10) << std::center << "Column" << "|" << std::setw(9) << std::center << "Header" << "|" << std::endl; which does not compile because <iomanip> has the stream

PSPS: (a Pre-scripted Post-script) It has just come to mind that a more prescient question would have included the notion of: Is this non-display of "0x"(showbase) for zero-value integers a standard behaviour, or is it just a quirk of my MinGW implementation? It all began on a pleasant Sunday morning... I want to dump some Handles in their hex representation, and in a consistant, formatted way. I want a leading 0x and a fixed width , but this is proving to be elusive using the expected stream manipulators. The only way I've found to do this is to cast the Handles to an unsigned long. This