1: #include "bmi.h" 
   2: string in_Str2Low (string& s) {
   3:    char* buf = new char[s.length()];
   4:    s.copy(buf, s.length());
   5:    for(int i = 0; i < (int)s.length(); i++)
   6:    buf[i] = tolower(buf[i]);
   7:    string r(buf, s.length());
   8:    delete buf;
   9:    return r;
  10: }
  11: