34 lines
1011 B
C++
34 lines
1011 B
C++
#include <iostream>
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#include <iomanip>
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#include <string>
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#include <map>
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#include <random>
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#include <cmath>
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int main()
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{
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// Seed with a real random value, if available
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std::random_device r;
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// Choose a random mean between 1 and 6
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std::default_random_engine e1(r());
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std::uniform_int_distribution<int> uniform_dist(1, 60);
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int mean = uniform_dist(e1);
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std::cout << "Randomly-chosen mean: " << mean << '\n';
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// Generate a normal distribution around that mean
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std::seed_seq seed2{r(), r(), r(), r(), r(), r(), r(), r()};
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std::mt19937 e2(seed2);
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std::normal_distribution<> normal_dist(mean, 2);
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std::map<int, int> hist;
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for (int n = 0; n < 10000; ++n) {
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++hist[std::round(normal_dist(e2))];
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}
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std::cout << "Normal distribution around " << mean << ":\n";
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for (auto p : hist) {
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std::cout << std::fixed << std::setprecision(1) << std::setw(2)
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<< p.first << ' ' << std::string(p.second/200, '*') << '\n';
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}
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}
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