Ответ:

#include <iostream>

#include <algorithm>

#include <vector>

#include <ctime>

int main()

{

using namespace std;

srand(time(NULL));

int16_t size = rand() % 20 + 5;

vector<int16_t> vec(size);

for (int16_t i = 0; i < size; i++)

{

 vec[i] = rand() % 50;

 cout << vec[i] << "\t";

}

cout << "\n\n";

sort(vec.begin(), vec.end());

for (int16_t i = 0; i < size; i++)

{

 cout << vec[i] << "\t";

}

 return 0;

}