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Template:C++ Standard library
ios is a header file in the C++ standard library which defines several types and functions basic to the operation of iostreams. This header is typically included automatically by other iostream headers. Programmers rarely include it directly.
[edit] Members
[edit] Typedefs
| Name | description
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ios | Supports the ios class from the old iostream library.
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streamoff | Supports internal operations.
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streampos | Holds the current position of the buffer pointer or file pointer.
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streamsize | Specifies the size of the stream.
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wios | Supports the wios class from the old iostream library.
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wstreampos | Holds the current position of the buffer pointer or file pointer.
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[edit] Manipulators
| Name | description
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boolalpha | Specifies that variables of type bool appear as true or false in the stream.
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dec | Specifies that integer variables appear in base 10 notation.
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fixed | Specifies that a floating-point number is displayed in fixed-decimal notation.
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hex | Specifies that integer variables appear in base 16 notation.
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internal | Causes a number's sign to be left justified and the number to be right justified.
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left | Causes text that is not as wide as the output width to appear in the stream flush with the left margin.
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noboolalpha | Specifies that variables of type bool appear as 1 or 0 in the stream.
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noshowbase | Turns off indicating the notational base in which a number is displayed.
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noshowpoint | Displays only the whole-number part of floating-point numbers whose fractional part is zero.
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noshowpos | Causes positive numbers to not be explicitly signed.
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noskipws | Cause spaces to be read by the input stream.
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nounitbuf | Causes output to be buffered and processed when the buffer is full.
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nouppercase | Specifies that hexadecimal digits and the exponent in scientific notation appear in lowercase.
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oct | Specifies that integer variables appear in base 8 notation.
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right | Causes text that is not as wide as the output width to appear in the stream flush with the right margin.
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scientific | Causes floating point numbers to be displayed using scientific notation.
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showbase | Indicates the notational base in which a number is displayed.
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showpoint | Displays the whole-number part of a floating-point number and digits to the right of the decimal point even when the fractional part is zero.
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showpos | Causes positive numbers to be explicitly signed.
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skipws | Cause spaces to not be read by the input stream.
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unitbuf | Causes output to be processed when the buffer is not empty.
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uppercase | Specifies that hexadecimal digits and the exponent in scientific notation appear in uppercase.
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[edit] Classes
| Name | description
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basic_ios | The template class describes the storage and member functions common to both input streams (of template class basic_istream) and output streams (of template class basic_ostream) that depend on the template parameters.
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fpos | The template class describes an object that can store all the information needed to restore an arbitrary file-position indicator within any stream.
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ios_base | The class describes the storage and member functions common to both input and output streams that do not depend on the template parameters.
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