std::resetiosflags - cppreference.com (original) (raw)

When used in an expression out << resetiosflags(mask) or in >> resetiosflags(mask), clears all format flags of the stream out or in as specified by the mask.

[edit] Parameters

[edit] Return value

An object of unspecified type such that

• if out is an object of type std::basic_ostream<CharT, Traits>, the expression out << resetiosflags(mask)
  • has type std::basic_ostream<CharT, Traits>&
  • has value out
  • behaves as if it called f(out, mask)
• if in is an object of type std::basic_istream<CharT, Traits>, the expression in >> resetiosflags(mask)
  • has type std::basic_istream<CharT, Traits>&
  • has value in
  • behaves as if it called f(in, mask)

where the function f is defined as:

[edit] Example

#include #include #include   int main() { std::istringstream in("10 010 10 010 10 010"); int n1, n2;   in >> std::oct >> n1 >> n2; std::cout << "Parsing "10 010" with std::oct gives: " << n1 << ' ' << n2 << '\n';   in >> std::dec >> n1 >> n2; std::cout << "Parsing "10 010" with std::dec gives: " << n1 << ' ' << n2 << '\n';   in >> std::resetiosflags(std::ios_base::basefield) >> n1 >> n2; std::cout << "Parsing "10 010" with autodetect gives: " << n1 << ' ' << n2 << '\n'; }

Output:

Parsing "10 010" with std::oct gives: 8 8 Parsing "10 010" with std::dec gives: 10 10 Parsing "10 010" with autodetect gives: 10 8

[edit] Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

[edit] See also

| | sets specific format flag (public member function of std::ios_base) [edit] | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | sets the specified ios_base flags (function) [edit] |