"孙宗君" <szj087@xxxxxxxxx> writes: > Why the following code is illegal? > > > #include <iostream> > #include <vector> > > vector<int > vi; > > vi.push_back(10); //why this line is illegal? > int ii = vi.at(0); // this line is legal?? This is a basic C++ question. It has nothing to do with gcc. Please ask questions of this sort on a C++ language mailing list. The answer is simply that statements are not permitted at top level. Variable initializations are permitted. Ian
