When used in an expressionout<< resetiosflags(mask) orin>> resetiosflags(mask), clears all format flags of the streamout orin as specified by themask.

[edit]Parameters

[edit]Return value

An object of unspecified type such that

• ifout is an object of typestd::basic_ostream<CharT, Traits>, the expressionout<< resetiosflags(mask)
  • has typestd::basic_ostream<CharT, Traits>&
  • has valueout
  • behaves as if it calledf(out, mask)
• ifin is an object of typestd::basic_istream<CharT, Traits>, the expressionin>> resetiosflags(mask)
  • has typestd::basic_istream<CharT, Traits>&
  • has valuein
  • behaves as if it calledf(in, mask)

where the functionf is defined as:

void f(std::ios_base& str,std::ios_base::fmtflags mask){// reset specified flags    str.setf(ios_base::fmtflags(0), mask);}

[edit]Example

#include <iomanip>#include <iostream>#include <sstream> 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';}

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

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