#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include <time.h>

#define n 20

void fnOdd(int mas[], int size)
{
    int tmp, i = 0, k = size - 1;

    while (i < k)
    {
        if (mas[k] % 2 == 0 && mas[i] % 2 != 0)
        {
            tmp = mas[k];
            mas[k] = mas[i];
            mas[i] = tmp;
            ++i;
            --k;
        }
        if (mas[i] % 2 == 0) ++i;
        if (mas[k] % 2 != 0) --k;
    }
}

int main()
{
    srand(time(0));

    int mas[n];


    for (int i = 0; i < n; i++)
    {
        mas[i] = rand() % 100;
    }


    for (int i = 0; i < n; i++)
    {
        printf("%d  ", mas[i]);
    }
    printf("\n\n");

    fnOdd(mas, n);


    for (int i = 0; i < n; i++)
    {
        printf("%d  ", mas[i]);
    }
    printf("\n");
    getchar(); getchar();
}