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    <metanoindex/>

     
    C++
     
    Bibliothque Numerics
    Fonctions mathmatiques courantes
    Virgule flottante environnement
    Nombres complexes
    Tableaux numriques
    La gnration de nombres pseudo-alatoires
    Moment de la compilation arithmtique rationnelle (C++11)
    Gnriques des oprations numriques
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    Generic numeric operations
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    iota (C++11)
    accumulate
    inner_product
    adjacent_difference
    partial_sum
     
    La gnration de nombres pseudo-alatoires
    Les moteurs et les adaptateurs de moteur
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    Engines and engine adaptors
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    linear_congruential_engine (C++11)
    mersenne_twister_engine (C++11)
    subtract_with_carry_engine (C++11)
    discard_block_engine (C++11)
    independent_bits_engine (C++11)
    shuffle_order_engine (C++11)
    Gnrateurs
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    Generators
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    random_device (C++11)
    Les distributions
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    Distributions
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    Distributions uniformes
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    Uniform distributions
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    uniform_int_distribution (C++11)
    uniform_real_distribution (C++11)
    generate_canonical (C++11)
    Distributions de Bernoulli
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    Bernoulli distributions
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    bernoulli_distribution (C++11)
    binomial_distribution (C++11)
    negative_binomial_distribution (C++11)
    geometric_distribution (C++11)
    Distributions de Poisson
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    Poisson distributions
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    poisson_distribution (C++11)
    exponential_distribution (C++11)
    gamma_distribution (C++11)
    weibull_distribution (C++11)
    extreme_value_distribution (C++11)
    Les distributions normales
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    Normal distributions
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    normal_distribution (C++11)
    lognormal_distribution (C++11)
    chi_squared_distribution (C++11)
    cauchy_distribution (C++11)
    fisher_f_distribution (C++11)
    student_t_distribution (C++11)
    Distributions d'chantillonnage
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    Sampling distributions
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    discrete_distribution (C++11)
    piecewise_constant_distribution (C++11)
    piecewise_linear_distribution (C++11)
    Squences de semences
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    Seed Sequences
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    seed_seq (C++11)
    Bibliothque C
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    C library
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    rand
    srand
    RAND_MAX
     
    <tbody> </tbody>
    Dclar dans l'en-tte <cstdlib>
    int rand();
    Retourne une rpartie uniformment pseudo-alatoire valeur entire comprise entre 0 et RAND_MAX (0 et RAND_MAX comprises) .
    Original:
    Returns a uniformly distributed pseudo-random integral value between 0 and RAND_MAX (0 and RAND_MAX included).
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    srand() doit tre appele avant tout appel rand() pour initialiser le gnrateur de nombres alatoires .
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    srand() should be called before any calls to rand() to initialize the random number generator.
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    Paramtres

    (Aucun)
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    (none)
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    Retourne la valeur

    Pseudo-alatoire valeur entire comprise entre 0 et RAND_MAX .
    Original:
    Pseudo-random integral value between 0 and RAND_MAX.
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    Exemple

    #include <cstdlib>
#include <iostream>
#include <ctime>

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

    Rsultat possible : 

    Uniform random value on [0 2147483647]: 1373858591

    Voir aussi
    initialise gnrateur de nombre pseudo-alatoire
    Original:
    initializes pseudo-random number generator
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    (fonction) [edit]
    C documentation for rand
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