Sorry for the mis-post! Your comment definitely put me on the right track. I was already "using namespace std;", but adding mymultimap.insert ( std::pair<char,int>('a',100) ); did the trick. Thanks for responding, even though the forum wasn't quite right! Best, Susan -- View this message in context: http://www.nabble.com/STL-multimap-g%2B%2B-compiler-error--tp24673178p24673644.html Sent from the gcc - Help mailing list archive at Nabble.com.