Difference between revisions of "cpp/io/manip/resetiosflags"
From cppreference.com
m (Text replace - "{{example cpp" to "{{example") |
m (Text replace - "{{cpp|" to "{{c|") |
||
| Line 5: | Line 5: | ||
}} | }} | ||
| − | When used in an expression {{ | + | When used in an expression {{c|out << resetiosflags(mask)}} or {{c|in >> resetiosflags(mask)}}, clears all format flags of the stream {{tt|out}} or {{tt|in}} as specified by the {{tt|mask}}. |
===Parameters=== | ===Parameters=== | ||
| Line 14: | Line 14: | ||
===Return value=== | ===Return value=== | ||
| − | Returns an object of unspecified type such that if {{tt|str}} is the name of an output stream of type {{ | + | Returns an object of unspecified type such that if {{tt|str}} is the name of an output stream of type {{c|std::basic_ostream<CharT, Traits>}} or {{c|std::basic_istream<CharT, Traits>}}, then the expression {{c|str << resetiosflags(mask)}} or {{c|str >> resetiosflags(mask)}} behaves as if the following code was executed: |
| − | {{ | + | {{c|1= |
str.setf(std::ios_base::fmtflags(0), mask); | str.setf(std::ios_base::fmtflags(0), mask); | ||
}} | }} | ||
Revision as of 19:32, 19 April 2012
| Defined in header <iomanip>
|
||
| /*unspecified*/ resetiosflags( std::ios_base::fmt_flags mask ); |
||
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.
Contents |
Parameters
| mask | - | bitmask of the flags to clear |
Return value
Returns an object of unspecified type such that if str is the name of an output stream of type std::basic_ostream<CharT, Traits> or std::basic_istream<CharT, Traits>, then the expression str << resetiosflags(mask) or str >> resetiosflags(mask) behaves as if the following code was executed:
str.setf(std::ios_base::fmtflags(0), mask);
Example
Run this code
#include <sstream> #include <iostream> #include <iomanip> 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
