#define L 100

main()
{
    clrscr();

    char s1[L];

    char s2[L];

    char seps[] = " ,\t\n";

    char *token;

    printf("Enter the sentence\n");

    gets(s1);

    token=strtok(s1,seps);

    while (token !=NULL)

}
else
{
    if (strstr(token, "ать") || strstr(token, "ять") || strstr(token, "уть") || strstr(token, "ють"))

    strcat(s2, "не");

    strcat(s2, token);
}
else
{
    strcat(s2, token);

    strcat(s2," ");

    token=strtok(NULL,seps);
}
else
{
printf("%s\n", s2);

getch();

}