#include <iostream>

#include <array>

#include <algorithm>

#include <random>

#include <iterator>

const size_t size_matrix = 5;

int main()

{

std::random_device random;

std::mt19937 generator(random());

std::uniform_real_distribution<float> dist(1.0, 100.0);

std::array<float, size_matrix> matrix[size_matrix];

for (size_t i = 0; i < size_matrix; i++)

{

 std::for_each(matrix[i].begin(), matrix[i].end(), [&generator, &dist](auto& var)

 {

  var = dist(generator);

 });

}

for (size_t i = 0; i < size_matrix; i++)

{

 std::copy(matrix[i].begin(), matrix[i].end(),  

   std::ostream_iterator<float>(std::cout, " "));

 std::cout << std::endl;

}

std::cout << "Result: " << std::endl;

for (size_t i = 0; i < size_matrix; i++)

 std::cout << matrix[i][i] << std::endl;

std::system("PAUSE >> void");

return 0;

}