mt19937 gen { random_device()() }; uniform_int_distribution<> uid(0, 100); //диапазон от 0..100
int main() { fstream f("F2.txt"); int a, b; cin >> a >> b; for (size_t i = a; i < b; ++i) { f << uid(gen) << " "; } vector<int> v; map<int, size_t> m; int temp; while ( !f.eof() ) { f >> temp; v.push_back(temp); } for (auto it = v.begin(); it != v.end(); ++it) { m[*it]++; } for (const auto &i : m) { cout << i.first << " = " << i.second << endl; } }
#include <array>
#include <numeric>
using namespace std;
const size_t N = 10;
int main()
{
size_t sum = 0;
array<int, N> a = { 1, 5, 9, 6, 3, 0, 1, 4, -2, 4 };
cout << "Count: ";
cout << accumulate(a.cbegin(), a.cend(), 0, [&sum](size_t count, const int
num) {
if (num > 1 && num < 5) {
++count;
sum += num;
}
return count;
});
cout << " Sum: " << sum << endl;
}