public member function
<random>

std::bernoulli_distribution::(constructor)

(1)
explicit bernoulli_distribution (double p = 0.5);
(2)
explicit bernoulli_distribution (const param_type& parm);
Construct bernoulli distribution
Constructs a bernoulli_distribution object with a probability of p (or with the probability specified by object parm).

Parameters

p
Probability of returning true.
This shall be a value between 0.0 and 1.0 (both included).
parm
An object representing the distribution's parameters, obtained by a call to member function param.
param_type is a member type.

Example

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
// bernoulli_distribution example: fortune-teller
#include <iostream>
#include <string>
#include <random>

int main()
{
  std::cout << "Please, enter a yes/no question (I will answer it):" << std::endl;
  std::string text;
  getline(std::cin,text);

  std::seed_seq seed (text.begin(),text.end());  // seed using question
  std::default_random_engine generator (seed);
  std::bernoulli_distribution distribution(0.5);

  bool result = distribution(generator);
  std::cout << ( result ? "yes" : "no" ) << std::endl;

  return 0;
}


Possible output:
Please, enter a yes/no question (I will answer it):
Should I buy a new laptop?
no

Complexity

Constant.

See also