N(string)

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>

using namespace std;

void reverser(char *s, int l, int r) {
    int j = 0;
    for (int i = l; i <= (l + r) / 2; i++) {
        swap(s[i], s[r - j]);
        j++;
    }
}



void swapper(char *s) {
    int n = 0;
    int i = 0;
    int l, l1, l2;
    int r, r1, r2;
    int length_max = -1;
    int length_min = 999999;
    while (s[i]) {
        while (s[i] == ' ' || s[i] == '.' || s[i] == ',') i++;
        l = i;
        while (s[i] && s[i] != ' ' && s[i] != '.' && s[i] != ',')i++;
        r = i - 1;
        n++;
        if (r-l>length_max) {
            length_max = r - l;
            r1 = r;
            l1 = l;
        }
        if (r - l < length_min) {
            r2 = r;
            l2 = l;
            length_min = r - l;
        }
    }
    if (l2 < l1) {
        swap(l1, l2);
        swap(r1, r2);
    }
    reverser(s, l1, r2);
    r1 = l1;
    while (s[r1] && s[r1] != ' '&& s[r1] != '.' && s[r1] != ',') r1++;
    r1--;
    reverser(s, l1, r1);
    l2 = r2;
    while (s[l2] && s[l2] != ' '&& s[l2] != '.' && s[l2] != ',') l2--;
    l2++;
    reverser(s, l2, r2);
    reverser(s, r1 + 1, l2 - 1);
}



int main()
{
    setlocale(LC_ALL, "Russian");
    cout << "Введите строку" << endl;
    char *s = (char*)malloc(256 * sizeof(char));
    gets_s(s, 256);
    swapper(s);
    printf("%s", s);
}