Переворот слов

#include <iostream>
#include <cstring>
using namespace std;

int main()
{
    const int N = 10000;
    char s[N];
    char t[N];
    cin.getline(s, N);

    int len = strlen(s);
    int lenth = 0;

    for (int j = len - 1; j > 0; j--)
    {
        while (s[j] == ' ' && j != 0)
        {
            j--;
        }
        int end = j;
        while (s[j] != ' ' && j != 0)
        {
            j--;
        }
        int beg;
        if (j != 0)
        {
            beg = j + 1;
        }
        else
        {
            beg = j;
        }

        for (int i = beg, x = 0 + lenth; i <= end; i++, x++)
        {
            t[x] = s[i];
        }

        lenth += end - beg + 2;

        t[lenth - 1] = ' ';

        //cout << beg << ' ' << end << ' ' << lenth << endl;
    }

    t[lenth - 1] = '\0';

    cout << t;
}