lb4.3.2

#include "pch.h"
#include <string.h>
#include <iostream>

using namespace std;

int main() {
    const int MAX = 4000;
    char str[MAX];
    char new_str[MAX + 1] = { 0 };
    const char DELIMS[] = " .,:;!?-\'()";

    cout << "Enter a string: ";
    cin.getline(str, MAX);
    int len = strlen(str);

    for (int i = 0; i <= len; i++) {
        for (int j = 0; DELIMS[j]; j++) {
            if (str[i] == DELIMS[j]) {
                str[i] = 0;
            }
        }
    }
    char* pLast = str + len - 1;
    for (; *pLast; pLast--) {};
    pLast += 1;

    bool flag = false;
    int o1 = 0;
    int o2 = -1;
    for (int i = 0; i <= len; i++) {
        if (!str[i]) {
            o1 = o2;
            o2 = i;
            bool flag = false;
            for (int j = o1 + 1; j < o2; j++) {
                for (int k = 0; pLast[k]; k++) {
                    if (str[j] == pLast[k]) {
                        flag = true;
                        break;
                    }
                }
                if (!flag) {
                    break;
                }
                if (flag && str[j + 1]) {
                    flag = false;
                }
            }
            if (flag) {
                strcat_s(new_str, MAX, str + o1 + 1);
                int len = strlen(new_str);
                new_str[len] = ' ';  //костыль для пробела
                new_str[len + 1] = 0;//
            }
        }
    }
    cout << new_str << endl;
    system("pause");
    return 0;
}