Сравнение двух векторов

#include "stdafx.h"
#include <iostream>
#include <conio.h>
#include <vector>
using namespace std;
 
bool vctcmp(vector<int> bigger, vector<int>smaller)
{
    int issame = 0;
 
    for (auto c : bigger)
    {
        for (auto d : smaller)
        {
            if (c == d)
            {
                ++issame;
            }
        }
    }
    if (issame >= smaller.size())
        return true;
    else return false;
}
 
 
int main()
{
    vector<int> vct_1, vct_2;
    int i(0);
    cout << "Fill in the first vector: " << endl;
    while (cin >> i && i != 0)
    {
        vct_1.push_back(i);
    }
    cout << "Fill in the second vector: " << endl;
    while (cin >> i && i != 0)
    {
        vct_2.push_back(i);
    }
 
    if (vct_1.size() > vct_2.size())
    {
        if (vctcmp(vct_1, vct_2)) cout << "true!";
        else cout << "false!";
    }
    else if (vctcmp(vct_2, vct_1)) cout << "true!";
         else cout << "false";
 
    
 
    _getch();
    return 0;
}

bool vctcmp(vector<int> &bigger, vector<int> &smaller)
{
    return std::search(bigger.begin(), bigger.end(), smaller.begin(), smaller.end()) != bigger.end();
}

#include <algorithm>

#include <algorithm>
#include <iostream>
#include <vector>
 
bool vctcmp(const std::vector<int> &bigger, const std::vector<int> &smaller)
{
    return std::search(bigger.begin(), bigger.end(), smaller.begin(), smaller.end()) != bigger.end();
}
 
bool test(const std::vector<int> &bigger, const std::vector<int> &smaller)
{
    return std::includes(bigger.begin(), bigger.end(), smaller.begin(), smaller.end());
}
 
int main()
{
    const std::vector<int> v1 = {1, 2, 3, 4, 5}, v2 = {1, 3, 5},
        &bigger = (v1.size() < v2.size() ? v2 : v1), &smaller = (v1.size() < v2.size() ? v1 : v2);
    std::cout << std::boolalpha << vctcmp(bigger, smaller) << std::endl << test(bigger, smaller);
}