char* operator +(char *a, char*b)
{
    int lena, lenb;
    int i, j;
    lena = strlen(a);
    lenb = strlen(b);
    lena += 1;

    for(i = 0; i <= lena; i++)
        a[i];

    for(j = 0; j < lenb; j++, i++)
        {
            a[i] = b[j];
        }
    return a;
}