random_device::random_device
Constrói o mecanismo.
random_device(const std::string& str);
Parâmetros
- str
a cadeia de caracteres de inicialização.
Comentários
o construtor inicializa o dispositivo (quando necessário) com str.
Exemplo
// std_tr1__random__random_device_construct.cpp
// compile with: /EHsc
#include <random>
#include <iostream>
typedef std::random_device Myceng;
int main()
{
Myceng ceng;
Myceng::result_type compval = ceng();
compval = compval; // to quiet "unused" warnings
std::cout << "entropy == " << ceng.entropy() << std::endl;
std::cout << "min == " << ceng.min() << std::endl;
std::cout << "max == " << ceng.max() << std::endl;
std::cout << "a random value == " << ceng() << std::endl;
std::cout << "a random value == " << ceng() << std::endl;
std::cout << "a random value == " << ceng() << std::endl;
return (0);
}
Requisitos
Cabeçalho: <random>
namespace: STD