negative_binomial_distribution in C++ with Examples

In this tutorial, we will be discussing a program to understand negative_binomial_distribution in C++.

This function follows the negative Binomial discrete distribution and produces integers according to this random distribution.

Example

 Live Demo

#include <bits/stdc++.h> using namespace std; int main() {    //setting number of experiments    const int exps = 10000;    const int numberstars = 100;    default_random_engine generator;    negative_binomial_distribution<int> distribution(4, 0.5);    int p[10] = {};    for (int i = 0; i < exps; ++i) {       int counting = distribution(generator);       if (counting < 10)          ++p[counting];    }    cout << "Negative binomial distribution with "<< "( k = 4, p = 0.5 ) :" << endl;    //printing the sequence from the array    for (int i = 0; i < 10; ++i)       cout << i << ": " << string(p[i] * numberstars / exps, '*') << endl;    return 0; }

Output

Negative binomial distribution with ( k = 4, p = 0.5 ) : 0: ***** 1: ************ 2: **************** 3: *************** 4: ************* 5: ********** 6: ******** 7: ***** 8: *** 9: **