void clear( std::ios_base::iostate state = std::ios_base::goodbit ); |
Clears the stream error state flags by assigning them the value of state. If rdbuf() == 0 then state | badbit is assigned. May throw an exception.
Parameters
| state | - | new error state flags setting. It can be a combination of the following constants:
|
Return value
(none).
Example
clear() without arguments can be used to unset the failbit after unexpected input.
#include <iostream>
#include <string>
int main()
{
double n;
while( std::cout << "Please, enter a number\n"
&& ! (std::cin >> n) )
{
std::cin.clear();
std::string line;
std::getline(std::cin, line);
std::cout << "I am sorry, but '" << line << "' is not a number\n";
}
std::cout << "Thank you for entering the number " << n << '\n';
}See also
| sets state flags (public member function) | |
| returns state flags (public member function) |
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