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Showing content from https://timsong-cpp.github.io/cppwp/n4659/basic.ios.cons below:

[basic.ios.cons]

30 Input/output library [input.output] 30.5 Iostreams base classes [iostreams.base] 30.5.5 Class template basic_ios [ios] 30.5.5.2 basic_ios constructors [basic.ios.cons]

explicit basic_ios(basic_streambuf<charT, traits>* sb);

Effects: Constructs an object of class basic_ios, assigning initial values to its member objects by calling init(sb).

basic_ios();

Effects: Constructs an object of class basic_ios ([ios.base.cons]) leaving its member objects uninitialized. The object shall be initialized by calling basic_ios::init before its first use or before it is destroyed, whichever comes first; otherwise the behavior is undefined.

~basic_ios();

Remarks: The destructor does not destroy rdbuf().

void init(basic_streambuf<charT, traits>* sb);

Postconditions: The postconditions of this function are indicated in Table 113.

Table

113

—

basic_ios::init()

effects

Element Value rdbuf() sb tie() 0 rdstate() goodbit if sb is not a null pointer, otherwise badbit. exceptions() goodbit flags() skipws | dec width() 0 precision() 6 fill() widen(' ') getloc() a copy of the value returned by locale() iarray a null pointer parray a null pointer

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