I could not understand where the problem is. getline does take 3 parameters.

istream& getline (char* s, streamsize n, char delim );
Parameters.
s A pointer to an array of characters.
n The maximum number of characters to store, including the ternimating null character.
delim The delimiter. The operation of extracting succesive characters is stopped when delimiter is read. This parameter is optional, if not specified the function considers '\n' the delimiter.