Здравствуйте, помогите написать программы на языке С++..

#include <iostream>
using namespace std;
void pow_for_each(unsigned* box, size_t len, int n) {
for (auto i = 0U; i < len; ++i) box[i] = static_cast<unsigned>(pow(box[i], n));
}
void show(unsigned* box, size_t len) {
for (auto i = 0U; i < len; ++i) cout << box[i] << ' ';
puts("");
}
int main() {
cout << "N: ";
int n;
cin >> n;
unsigned a[] = { 2, 3, 4, 5, 6 };
show(a, size(a));
pow_for_each(a, size(a), n);
show(a, size(a));
unsigned b[] = { 7, 6, 5, 4, 3, 2 };
show(b, size(b));
pow_for_each(b, size(b), n);
show(b, size(b));
system("pause > nul");
}

#include <iostream>
using namespace std;
int fn(unsigned* box, size_t len) {
auto odd = 0;
auto even = 0;
for (auto i = 0U; i < len; ++i) box[i] & 1 ? ++odd : ++even;
return odd > even? 1 : 2;
}
void show(unsigned* box, size_t len) {
cout << ">>> ";
for (auto i = 0U; i < len; ++i) cout << box[i] << ' ';
puts("");
}
int main() {
unsigned a[] = { 2, 3, 4, 5, 6 };
show(a, size(a));
cout << "<<< " << fn(a, size(a)) << '\n';
unsigned b[] = { 7, 6, 5, 4, 3, 2, 1 };
show(b, size(b));
cout << "<<< " << fn(b, size(b)) << '\n';
system("pause > nul");
}