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I would like an example of the use of random in C++, because I need to use it but I don’t know how it works.
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I would like an example of the use of random in C++, because I need to use it but I don’t know how it works.
7
#include <random>
#include <iostream>
int main() {
using namespace std;
random_device rng; // Gerador de números randômicos próprio para gerar seeds.
mt19937 prng(rng()); // Gerador pseudo-randômico Mersenne Twister inicializado com uma seed.
uniform_int_distribution<int> random(1, 10); // Distribuição uniforme para números de 1 à 10.
cout << random(prng) << endl; // Gera um número de 1 à 10 uniformemente via Mersenne Twister.
cout << random(prng) << endl; // Gera outro número de 1 à 10 uniformemente via Mersenne Twister.
}
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The code below generates 10 random numbers from 0 to 10; if you random numbers with a longer range, just change the line item = rand() % 100;
(now it will generate 10 elements with the range from 0 to 100.
int main(int argc, char *argv[]){
int i;
int item;
for ( i = 1; i <= 10; i++ ) {
item = rand() % 10;
printf( "%3d ", item );
}
}
was not to generate random numbers, all made out the same number.
Rodolfo, you must feed with a Seed value to generate the random numbers. Search on srand.
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#include <random>
does not work in the devC++– Vale
@Rodolfo the best you have to do is to stop using Devc++. This is a very outdated IDE and is not used by any desktop environment. Even so, since it uses gcc, make sure that the gcc version of it supports the -Std=c++11 flag, if so, it is just use it to work, otherwise stop using this environment and adopt another one. Have much better free and free alternatives.
– pepper_chico
beauty I’ll check
– Vale