Generating a pseudo-random number

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A pseudo-random number generator generates values that can be guessed based on previously generated values. In other words: it is deterministic. Do not use a pseudo-random number generator in situations where a true random number is required.

#include <iostream>
#include <random>

int main()
   std::default_random_engine pseudo_random_generator;
   std::uniform_int_distribution<int> int_distribution(0, 9);
   int actual_distribution[10] = {0,0,0,0,0,0,0,0,0,0};
   for(int i = 0; i < 10000; i++) {
       int result = int_distribution(pseudo_random_generator);

   for(int i = 0; i <= 9; i++) {
       std::cout << actual_distribution[i] << " ";
   return 0;

This code creates a random number generator, and a distribution that generates integers in the range [0,9] with equal likelihood. It then counts how many times each result was generated.

The template parameter of std::uniform_int_distribution<T> specifies the type of integer that should be generated. Use std::uniform_real_distribution<T> to generate floats or doubles.

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