Just shit programm

#include "stdafx.h"
#include <iostream>
#include <ctime>
#include <stdlib.h>
#include <vector>
#include <string>
#include <algorithm>
#include <iomanip>
#include "mikelib.h"

using namespace std;

vector<int> vec;
vector<int> vec_custom_sort;

void vec_ran(int n, int x) //Randomly generates numbers and fills vector
{
    int i = 0;
    if (x == 0) while (i < n) //Fills vector with absolutely random numbers
    {
        vec.push_back(rand());
        vec_custom_sort.push_back(vec[i]);
        i++;
    }
    else while (i < n)//Fills vector with random numbers with x interval
    {
        vec.push_back(rand() % x);
        vec_custom_sort.push_back(vec[i]);
        i++;
    }
}

void vec_print(int n) // Prints whole vector if it's smaller than 50 integers or prints first 50 integers if vector is longer
{
    int i = 0;
    if (n <= 50)
    {
        while (i < n)
        {
            cout << vec[i] << ' ';
            i++;
        }
    }
    else
    {
        while (i < 50)
        {
            cout << vec[i] << ' ';
            i++;
        }
    }
    cout << endl;
}

void vec_print_custom(int n) // Does the same thing as function before, but for other vector
{
    cout << setw(55) << "Sorted vector by custom function" << endl;
    int i = 0;
    if (n <= 50)
    {
        while (i < n)
        {
            cout << vec_custom_sort[i] << ' ';
            i++;
        }
    }
    else
    {
        while (i < 50)
        {
            cout << vec_custom_sort[i] << ' ';
            i++;
        }
    }
    cout << endl;
}

void vec_type(int n) //Function for typing numbers into vector
{
    int i = 0, num;
    while (i < n)
    {
        cout << "Type " << i+1 << "th element of vector: ";
        cin >> num;
        vec.push_back(num);
        vec_custom_sort.push_back(num);
        i++;
    }
}

int check(string temp) // Check for input
{
    if (temp == "Yes" || temp == "yes" || temp == "y") return 1;
    else if (temp == "No" || temp == "no" || temp == "n") return 2;
    else return 0;
}

void choice(int n, string temp, int x) //Compilation of several functions in one function where it also decides
{                                      //the path depending on output from previous function
    if (check(temp) == 1)
    {
        vec_ran(n, x);
        vec_print(n);
        cout << endl;
    }
    else if (check(temp) == 2)
    {
        vec_type(n);
        vec_print(n);
        cout << endl;
    }
}

void ShellsSort(unsigned N)//Shell sorting algorithm
{
    unsigned i, j, d;
    int t;
    for (d = N / 2; d > 0; d /= 2)
        for (i = d; i < N; i++)
        {
            t = vec_custom_sort[i];
            for (j = i; j >= d; j -= d)
            {
                if (t < vec_custom_sort[j - d])
                    vec_custom_sort[j] = vec_custom_sort[j - d];
                else
                    break;
            }
            vec_custom_sort[j] = t;
        }
}

int main()
{

    cout << "Hello! This is program for sorting vectors.\n";//Welcome message
    string temp;
    cout << "Do you want to generate vector with random numbers? (If no, you will need to write in manually) [Yes/No]: ";
    do //Cycle for asking user to decide future path, has input check because this step is important
    {
        cin >> temp;
        if (check(temp) == 0) cout << "Type [Yes] or [No] without brackets: ";
    } while (check(temp) == 0);
    int n = read_uint("Type the amount of variable in vector");
    //cout << "Type the amount of variable in vector: ";
    //cin >> n;
    int x = 0;
    if (check(temp) == 1) {//Small "if" for additional input if user said "Yes" in previous step
        //cout << "Type the amount of unique integers(0 if you don't need it): ";
        x = read_uint("Type the amount of unique integers(0 if you don't need it)");
        cout << endl << setw(70) << "Default vector (or a part of it if it's bigger than 50 integers)" << endl;
    }
    choice(n, temp, x);
    double t = clock(); //Clock function from ctime, gets current clock time and logs it into "t" integer
    sort(vec.begin(), vec.end());
    t = (clock() - (double)t)/CLOCKS_PER_SEC; //Gets current time minus previous logged time
    cout << setw(55) << "Sorted vector by library function" << endl;
    vec_print(n);
    cout << "Computer sorted vector in " << t << " seconds." << endl << endl;
    double t_custom = clock();
    ShellsSort(n);
    t_custom = (clock() - t_custom)/CLOCKS_PER_SEC;
    vec_print_custom(n);
    cout << "Computer sorted vector in " << t_custom << " seconds." << endl << endl;
    cout << "Time difference between default sort function and custom is: " << t_custom - t << " seconds" << endl;
    system("pause");
    return 0;
}