From cppreference.com
doublep()const; (1) (since C++11)IntTypet()const; (2) (since C++11)Returns the parameters the distribution was constructed with.
1) Returns the p distribution parameter. It defines the probability of a trial generating true. The default value is 0.5.
2) Returns the t distribution parameter. It identifies the number of trials. The default value is 1.
Parameters
(none)
Return value
1) The p distribution parameter.
2) The t distribution parameter.
See also
gets or sets the distribution parameter object
(public member function)