29 Input/output library [input.output]

29.5 Iostreams base classes [iostreams.base]

29.5.6 ios_­base manipulators [std.ios.manip]

29.5.6.1 fmtflags manipulators [fmtflags.manip]

1
#
Each function specified in this subclause is a designated addressable function ([namespace.std]).
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ios_base& boolalpha(ios_base& str);
2
#
Effects: Calls str.setf(ios_­base​::​boolalpha).
3
#
Returns: str.
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ios_base& noboolalpha(ios_base& str);
4
#
Effects: Calls str.unsetf(ios_­base​::​boolalpha).
5
#
Returns: str.
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ios_base& showbase(ios_base& str);
6
#
Effects: Calls str.setf(ios_­base​::​showbase).
7
#
Returns: str.
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ios_base& noshowbase(ios_base& str);
8
#
Effects: Calls str.unsetf(ios_­base​::​showbase).
9
#
Returns: str.
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ios_base& showpoint(ios_base& str);
10
#
Effects: Calls str.setf(ios_­base​::​showpoint).
11
#
Returns: str.
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ios_base& noshowpoint(ios_base& str);
12
#
Effects: Calls str.unsetf(ios_­base​::​showpoint).
13
#
Returns: str.
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ios_base& showpos(ios_base& str);
14
#
Effects: Calls str.setf(ios_­base​::​showpos).
15
#
Returns: str.
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ios_base& noshowpos(ios_base& str);
16
#
Effects: Calls str.unsetf(ios_­base​::​showpos).
17
#
Returns: str.
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ios_base& skipws(ios_base& str);
18
#
Effects: Calls str.setf(ios_­base​::​skipws).
19
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Returns: str.
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ios_base& noskipws(ios_base& str);
20
#
Effects: Calls str.unsetf(ios_­base​::​skipws).
21
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Returns: str.
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ios_base& uppercase(ios_base& str);
22
#
Effects: Calls str.setf(ios_­base​::​uppercase).
23
#
Returns: str.
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ios_base& nouppercase(ios_base& str);
24
#
Effects: Calls str.unsetf(ios_­base​::​uppercase).
25
#
Returns: str.
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ios_base& unitbuf(ios_base& str);
26
#
Effects: Calls str.setf(ios_­base​::​unitbuf).
27
#
Returns: str.
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ios_base& nounitbuf(ios_base& str);
28
#
Effects: Calls str.unsetf(ios_­base​::​unitbuf).
29
#
Returns: str.

29.5.6.2 adjustfield manipulators [adjustfield.manip]

1
#
Each function specified in this subclause is a designated addressable function ([namespace.std]).
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ios_base& internal(ios_base& str);
2
#
Effects: Calls str.setf(ios_­base​::​internal, ios_­base​::​adjustfield).
3
#
Returns: str.
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ios_base& left(ios_base& str);
4
#
Effects: Calls str.setf(ios_­base​::​left, ios_­base​::​adjustfield).
5
#
Returns: str.
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ios_base& right(ios_base& str);
6
#
Effects: Calls str.setf(ios_­base​::​right, ios_­base​::​adjustfield).
7
#
Returns: str.

29.5.6.3 basefield manipulators [basefield.manip]

1
#
Each function specified in this subclause is a designated addressable function ([namespace.std]).
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ios_base& dec(ios_base& str);
2
#
Effects: Calls str.setf(ios_­base​::​dec, ios_­base​::​basefield).
3
#
Returns: str294.
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ios_base& hex(ios_base& str);
4
#
Effects: Calls str.setf(ios_­base​::​hex, ios_­base​::​basefield).
5
#
Returns: str.
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ios_base& oct(ios_base& str);
6
#
Effects: Calls str.setf(ios_­base​::​oct, ios_­base​::​basefield).
7
#
Returns: str.
294)
The function signature dec(ios_­base&) can be called by the function signature basic_­ostream& stream​::​operator<<(ios_­base& (*)(ios_­base&)) to permit expressions of the form cout << dec to change the format flags stored in cout.
⮥

29.5.6.4 floatfield manipulators [floatfield.manip]

1
#
Each function specified in this subclause is a designated addressable function ([namespace.std]).
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ios_base& fixed(ios_base& str);
2
#
Effects: Calls str.setf(ios_­base​::​fixed, ios_­base​::​floatfield).
3
#
Returns: str.
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ios_base& scientific(ios_base& str);
4
#
Effects: Calls str.setf(ios_­base​::​scientific, ios_­base​::​floatfield).
5
#
Returns: str.
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ios_base& hexfloat(ios_base& str);
6
#
Effects: Calls str.setf(ios_­base​::​fixed | ios_­base​::​scientific, ios_­base​::​floatfield).
7
#
Returns: str.
8
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[Note
:
The more obvious use of ios_­base​::​hex to specify hexadecimal floating-point format would change the meaning of existing well-defined programs.
C++ 2003 gives no meaning to the combination of fixed and scientific.
— end note
]
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ios_base& defaultfloat(ios_base& str);
9
#
Effects: Calls str.unsetf(ios_­base​::​floatfield).
10
#
Returns: str.