#include <iostream>
#include <cstring>
#include <cstdlib>
using namespace std;
void _vhod(char* s)
{
    char* uk[255];
    for (int i = 0; i < 255; i ++) uk[i] = &s[i];
    int word = 0;
    for (int i = 0; i < 255; i++)
    {
        if (*uk[i] == '\0' && word == 0) break;
        if (*uk[i] != ' ' && *uk[i] != '\0') word++;
        else
        {
            for (int j = i - word; j < i - 1; j++)
            {
                if (*uk[j] == *uk[i - 1])
                {
                    for (int k = j; k < strlen(s); k++) *uk[k] = *uk[k + 1];
                    word--;
                    i--;
                    j--;
                }
            }
            word = 0;
        }
    }
}
int main()
{
    setlocale(LC_ALL, "rus");
    char s[255] = { 0 };
    cout << "Введите предложение: ";
    gets(s);
    _vhod(s);
    puts(s);
    system("pause");
}