первая и последняя буква

#include <iostream>
using namespace std;
int main()
{
    char str[] = "kek lol orbidol dadasad";
    int i = 0,length;
    bool b;
    do
    {
        length = 0;
        do
        {
        i++;
        length++;
        }
        while ((str[i - 1] != ' ') && (str[i - 1] != '\0'));

        b = true;
        for (int j = 0; j<length / 2; j++)
            if (str[i - length ] != str[i - 2])
                b= false;
        if (b)
            for (int j = i - length; j<i - 1; j++)
                cout << str[j];
                cout << endl;
    }
    while (i < strlen(str));
    system("pause");
    return 0;

}