**********************Pointer**********************

//https://vk.com/evgenykravchenko0

                ___                                        ___                   ___
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              /  /:/_                /__/\               /  /:/_               /  /:/_
             /  /:/ /\               \  \:\             /  /:/ /\             /  /:/ /\
            /  /:/ /:/_               \  \:\           /  /:/_/::\           /  /:/ /:/_
           /__/:/ /:/ /\          ___  \__\:\         /__/:/__\/\:\         /__/:/ /:/ /\
           \  \:\/:/ /:/         /__/\ |  |:|         \  \:\ /~~/:/         \  \:\/:/ /:/
            \  \::/ /:/          \  \:\|  |:|          \  \:\  /:/           \  \::/ /:/
             \  \:\/:/            \  \:\__|:|           \  \:\/:/             \  \:\/:/
              \  \::/              \__\::::/             \  \::/               \  \::/
               \__\/                   ~~~~               \__\/                 \__\/
                            ___
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                           \  \:\              /  /\               /  /\
                            \  \:\            /  /:/              /  /:/
                        _____\__\:\          /__/::\             /__/::\
                       /__/::::::::\         \__\/\:\__          \__\/\:\__
                       \  \:\~~\~~\/            \  \:\/\            \  \:\/\
                        \  \:\  ~~~              \__\::/             \__\::/
                         \  \:\                  /__/:/              /__/:/
                          \  \:\                 \__\/               \__\/
                           \__\/

#include "pch.h"
#include <iostream>
#include <stdio.h>
#include <malloc.h>
#include <stdlib.h>

int Check_size(int size);
int input(int (*mas), int size);
int output(int (*mas), int size);
int Sum_Min(int (*mas), int size);
int Last_null(int (*mas), int size);

int main()
{
    int size = 0;
    printf("Enter the size of the integer array: ");
    scanf("%d", &size);

    Check_size(size);

    int *mas;

    mas = (int*)malloc(size * sizeof(int));

    input(mas, size);
    printf("Array: ");

    output(mas, size);

    Sum_Min(mas, size);

    Last_null(mas, size);

    free(mas);
    system("pause");

    return 0;
}















int Check_size(int size)
{
    if ((size > 50) || (size < 1))
    {
        printf("\nWrong size of the array.\n");
        printf("Enter the size of the integer array: ");
        scanf("%d", &size);
    }

    return size;

}

int input(int (*mas), int size)
{
    printf("\nEnter the integer array elements:\n");

    for (int i = 0; i < size ; i++)
    {
        printf("a[%d] = ", i);
        scanf("%d", &(*mas));
        mas++;
    }

    return size;
}

int output(int (*mas), int size)
{
    for (int i = 0; i < size ; i++)
    {
        printf("%d ", *mas);
        mas++;
    }

    return size;
}



int Sum_Min(int (*mas), int size)
{
    int sum = 0;

    for (int i = 0; i < size; i++)
    {
        if (*mas < 0)
        {
            *mas = (*mas) * (-1);
            sum = sum + (*mas);
        }
        mas++;
    }

    printf("\nMin sum is %d \n", sum);

    return sum;
}


int Last_null(int (*mas), int size)
{
    int num;
    mas = mas + size - 1;
    for (int i = size - 1; i >= 0; i--)
    {
        if ((*mas) == 0)
        {
            num = i;
            break;
        }
        *mas--;

    }
    printf("\nLast index of null element of the array is %d\n", num);

    return num;
}