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      std::rand

      Da cppreference.com
      < cpp‎ | numeric‎ | random

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      C++
       
      Biblioteca numéricos
      Funções matemáticas comuns
      De ponto flutuante ambiente
      Números complexos
      Matrizes numéricas
      Pseudo-aleatório de geração de números
      Tempo de compilação aritmética racional(C++11)
      Genéricos operações numéricas
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      Generic numeric operations
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      (C++11)
       
      Pseudo-aleatório de geração de números
      Motores e adaptadores de motor
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      Engines and engine adaptors
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      (C++11)
      (C++11)
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      (C++11)
      Geradores
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      Generators
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      Distribuições
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      Distributions
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      Distribuições uniformes
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      Uniform distributions
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      (C++11)
      (C++11)
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      Distribuições de Bernoulli
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      Bernoulli distributions
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      Distribuições de Poisson
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      Poisson distributions
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      Distribuições normais
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      Normal distributions
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      Distribuições de amostragem
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      Sampling distributions
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      Seqüências de sementes
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      Seed Sequences
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      C biblioteca
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      C library
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      rand
       
      Definido no cabeçalho <cstdlib>
      int rand();
      Retorna uma distribuído uniformemente valor pseudo-aleatório integral entre ​0​ e RAND_MAX (0 e RAND_MAX incluído).
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      Returns a uniformly distributed pseudo-random integral value between ​0​ and RAND_MAX (0 and RAND_MAX included).
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      srand() deve ser chamado antes de quaisquer chamadas para rand() para inicializar o gerador de números aleatórios.
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      srand() should be called before any calls to rand() to initialize the random number generator.
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      Índice

      [editar]Parâmetros

      (Nenhum)
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      (none)
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      [editar]Valor de retorno

      Pseudo-aleatório valor integral entre ​0​ e RAND_MAX.
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      Pseudo-random integral value between ​0​ and RAND_MAX.
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      [editar]Exemplo

      #include <cstdlib>#include <iostream>#include <ctime>   int main(){std::srand(std::time(0));//use current time as seed for random generatorint uniform_random_variable = std::rand();std::cout<<"Uniform random value on [0 "<<RAND_MAX<<"]: "<< uniform_random_variable <<'\n';}

      Potencial saída: 

      Uniform random value on [0 2147483647]: 1373858591

      [editar]Veja também

      inicializa pseudo-aleatórios gerador de números
      Original:
      initializes pseudo-random number generator
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      (função)[edit]
      Documentação C para rand
      Obtida de "https://pt.cppreference.com/mwiki/index.php?title=cpp/numeric/random/rand&oldid=21475"
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