Decimal radix 10 is equivalent to "%d"

Hexadecimal radix 16 is equivalent to "%X"

Decimal base 8 is equivalent to "%o"

Setfill(c) sets the fill character to c.

Setprecision(n) sets the display decimal precision to n digits.

The field width of Setw(n) is n characters.

Setiolags (IOs:: fixed: fixed) fixed floating-point display.

Setiolags (IOS:: Scientific) index representation

Setiosflags(ios::left) left alignment

Setiosflags(ios::right) right alignment

Setiosflags(ios::skipws ignores leading spaces.

Setiosflags (IOS:: uppercase) 16 hexadecimal number uppercase output.

Setiosflags (IOs:: lowercase) 16 hexadecimal lowercase output.

Setiosflags(ios::showpoint) forces the decimal point to be displayed.

Setiosflags(ios::showpos) forces the display of symbols.

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Here is an example.

# include & ltiostream.h & gt

# include & ltiomanip & gt

#pragma argsused

int main(int argc，char* argv[])

{

int num 1；

Unsigned integer num2

num 1 = 28；

num 2 = 4345 1；

cout & lt& ltsetw(5)& lt； & ltnum 1 & lt； & ltendl//setw(5) Set the domain width to 5 characters.

cout & lt& ltsetw(5)& lt； & ltnum2 & lt& ltendl//setw(5) Set the field width to 5 characters.

cout & lt& ltsetw(5)& lt； & ltset fill(' # ')& lt； & ltnum 1 & lt； The & ltendl// field is 5 characters wide, which is not enough to be filled with "#".

cout & lt& ltsetw(5)& lt； The & ltnum2 & lt& ltendl// field has a width of 5 characters.

Returns 0;

}

Results:

28

4345 1

###28

4345 1