Espacios de nombres
Variantes
Acciones

std::rand

De cppreference.com
< cpp‎ | numeric‎ | random

 
 
Numéricos biblioteca
Funciones matemáticas comunes
Floating-point medio ambiente
Los números complejos
Matrices numéricas
Pseudo-aleatoria de generación de números
En tiempo de compilación aritmética racional (C++11)
Genéricos operaciones numéricas
Original:
Generic numeric operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
(C++11)
 
Pseudo-aleatoria de generación de números
Motores y adaptadores de motor
Original:
Engines and engine adaptors
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Generadores
Original:
Generators
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Distribuciones
Original:
Distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Distribuciones uniformes
Original:
Uniform distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Bernoulli distribuciones
Original:
Bernoulli distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Poisson distribuciones
Original:
Poisson distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Distribuciones normales
Original:
Normal distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Distribuciones de muestreo
Original:
Sampling distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Secuencias de semillas
Original:
Seed Sequences
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
(C++11)
C biblioteca
Original:
C library
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
rand
 
Definido en la cabecera <cstdlib>
int rand();
Devuelve una distribuida uniformemente pseudo-aleatorio valor integral entre 0 y RAND_MAX (0 y RAND_MAX incluido) .
Original:
Returns a uniformly distributed pseudo-random integral value between 0 and RAND_MAX (0 and RAND_MAX included).
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
srand() debe ser llamada antes de cualquier llamada a rand() para inicializar el generador de números aleatorios .
Original:
srand() should be called before any calls to rand() to initialize the random number generator.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Contenido

[editar] Parámetros

(Ninguno)
Original:
(none)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Valor de retorno

Pseudo-random valor integral entre 0 y .. RAND_MAX
Original:
Pseudo-random integral value between 0 and RAND_MAX.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Ejemplo

#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';
}

Posible salida:

Uniform random value on [0 2147483647]: 1373858591

[editar] Ver también

inicializa pseudo-generador de números aleatorios
Original:
initializes pseudo-random number generator
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(función) [editar]