IO Manipulators:

4   System defined manipulator are defined in “iomanip.h”

4   These are defined by the system and can be directly used with stream operators.

Manipulator	Meaning
skipws	Skips white spaces
skipws	Does not skip white spaces on input
showbase	Shows base indicator i.e. 0 for octal 0x for hexadecimal
showpoint	Shows decimal point and zeros after for float value
noshowpoint	Does not Show decimal point and zeros after for float value
showpos	Shows “+” before positive integers
noshowpos	Does not show “+” before positive integers
dec	Convert to decimal
oct	Convert to octal
hex	Convert to hexadecimal
left	Left justify output
right	Right justify output
scientific	Uses exponential format for float values
endl	Inserts new line
setw(n)	Sets width
setfill(n)	Sets fill character
setprecesion(n)	Sets floating point precesion
setiosflags(flags)	Sets formatting flags
resetiosflags(flags)	clears formatting flags

Example:

main()

{

char x[]=“hello”;

cout<<setfill(‘*’)<<setw(10)<<left;

cout<<x;           // prints “hello*****”

float f=3.456;

cout<<setprecesion(2); 

cout<<endl<<f; // prints 3.46

int x=30;

cout<<endl<<oct<<x;  // prints 36

}