basic_ostream& put( char_type ch ); |
Behaves as an UnformattedOutputFunction. After constructing and checking the sentry object, writes the character ch to the output stream.
If the output fails for any reason, sets badbit.
Parameters
| ch | - | character to write |
Return value
*this.
Notes
This function is not overloaded for the types signed char or unsigned char, unlike the formatted operator<<
Unlike formatted output functions, this function does not set the failbit if the output fails.
Example
#include <fstream>
#include <iostream>
int main()
{
std::cout.put('a'); // normal usage
std::cout.put('\n');
std::ofstream s("/does/not/exist/");
s.clear(); // pretend the stream is good
std::cout << "Unformatted output: ";
s.put('c'); // this will set badbit, but not failbit
std::cout << " fail=" << bool(s.rdstate() & s.failbit);
std::cout << " bad=" << s.bad() << '\n';
s.clear();
std::cout << "Formatted output: ";
s << 'c'; // this will set badbit and failbit
std::cout << " fail=" << bool(s.rdstate() & s.failbit);
std::cout << " bad=" << s.bad() << '\n';
}Output:
a Unformatted output: fail=0 bad=1 Formatted output: fail=1 bad=1
See also
| inserts character data (function template) | |
| inserts blocks of characters (public member function) |
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