parameterless manipulators that operate on output streams : cout « Development « C++ Tutorial

1. C++ Tutorial
2. Development
3. cout

Manipulator            Purpose

boolalpha              Turns on boolalpha flag.

endl                   Outputs a newline.

ends                   Outputs a null.

dec                    Turns on dec flag. Turns off the hex and oct flags.

fixed                  Turns on fixed flag. Turns off the scientific flag.

flush                  Flushes the stream.

hex                    Turns on hex flag. Turns off the dec and oct flags.

internal               Turns on internal flag. Turns off the left and right flags.

left                   Turns on left flag. Turns off the right and internal flags.

noboolalpha            Turns off boolalpha flag.

noshowbase             Turns off showbase flag.

noshowpoint            Turns off showpoint flag.

noshowpos              Turns off showpos flag.

nounitbuf              Turns off unitbuf flag.

nouppercase            Turns off uppercase flag.

oct                    Turns on oct flag. Turns off the dec and hex flags.

right                  Turns on right flag. Turns off the left and internal flags.

scientific             Turns on scientific flag. Turns off the fixed flag.

showbase               Turns on showbase flag.

showpoint              Turns on showpoint flag.

showpos                Turns on showpos flag.

unitbuf                Turns on unitbuf flag.

uppercase              Turns on uppercase flag.
   

#include <iostream>
using namespace std; 
void showflags(void);

int main(void)
{
   showflags();
   cout.setf(ios::right | ios::showpoint | ios::fixed);
   showflags();
}

void showflags(void){
   long flag_set, i;
   int j;
   char flags[15][12] = {
      "skipws", "left", "right", "internal", "dec",
      "oct", "hex", "showbase", "showpoint", "uppercase",
      "showpos", "scientific", "fixed", "unitbuf",
   };

   flag_set = cout.flags();
   for (i=1, j=0; i<0x2000; i = i<<1, j++)
      if (i & flag_set)
         cout << flags[j] << " is on." << endl;
      else
         cout << flags[j] << " is off." << endl;
   cout << endl;
}