main.cpp

#include "header.h"
#include <iostream>
#include <exception>

using namespace std;

int chooseType();

int main()
{
    cout << setw(13) << "Name: " << "LAB 1.1\n";
    cout << setw(13) << "Student: " << "Ocheretnyi Viacheslav\n";
    cout << setw(13) << "Group: " << "K - 15\n";
    cout << setw(13) << "Description: " << "Variant 20 (insert a value before the first prime element)\n\n";

    const int N = 15;
    int a[N], n, value, type;
    while((type = chooseType()) != 9)
    {
        try
        {
            switch(type)
            {
                case 1:
                    cout << "Enter array size: ";
                    if (!(cin >> n))
                    {
                        cout << "INVALID DATA\n";
                        return 0;
                    }
                    generateRandomArray(a, N, n);
                    cout << "Generated array:\n";
                    break;
                case 2:
                    cout << "Please, enter elements of array (finish input with q): \n";
                    readArray(a, N, n);
                    cout << "Your array: \n";
                    break;
            }
            printArray(a, n);
            cout << "Enter a number to insert into the array:\n";
            if (!(cin >> value))
            {
                cout << "INVALID DATA\n";
                return 0;
            }
            processing(a, n, N, value);
            cout << "Result of processing array: \n";
            printArray(a, n);
        }
        catch(length_error e)
        {
            cout << e.what() << "\n";
        }
        catch(exception e)
        {
            cout << e.what() << "\n";
        }
    }
    cout << "End of work";
    return 0;
}

int chooseType()
{
    cout << "\nSelect option:\n" <<
            "1 - generate random array\n" <<
            "2 - read array from console\n" <<
            "9 - finish work\n";

    int option = -1;
    if (!(cin >> option))
    {
        cout << "Invalid option\n";
        return option = 9;
    }
    if (!(option == 1 || option == 2 || option == 9))
    {
        cout << "Invalid option\n";
        option = 9;
    }
    return option;
}