In some cases, we need a variable only temporarily. For example, consider the following situation:

int Add(int nX, int nY) { int nSum = nX + nY; return nSum; } int main() { using namespace std; cout << Add(5, 3); return 0; }

In the Add() function, note that the nSum variable is really . . . → Read More: 8.14 — Anonymous variables and objects

In the lesson on composition, you learned how to construct complex classes by combining simpler classes. Composition is perfect for building new objects that have a has-a relationship with their subobjects. However, composition (and aggregation) is just one of the two major ways that C++ lets you construct complex classes. The second way is . . . → Read More: 11.1 — Introduction to inheritance

In this section, we’ll address some of the common issues that new programmers seem to run across with fairly high probability. This is not meant to be a comprehensive list of compilation or execution problems, but rather a pragmatic list of solutions to very basic issues. If you have any suggestions for other issues . . . → Read More: 0.7 — A few common C++ problems