como puedo agregarle el numero de lineas?

cual es la diferencia entre visual c++ 6 y visual c++ 2010 ??? hay alguna diferencia ?

Visual C++ 6.0 (commonly known as VC6), which included MFC 6.0, was released in 1998. The release was somewhat controversial since it did not include an expected update to MFC. Visual C++ 6.0 is still quite popular and often used to maintain legacy projects. There are, however, issues with this version under Windows XP, especially under the debugging mode (for example, the values of static variables do not display). The debugging issues can be solved with a patch called the "Visual C++ 6.0 Processor Pack".

Visual C++ 2010 (known also as Visual C++ 10.0) was released on April 12, 2010, and it is currently the latest stable release. It uses a SQL Server Compact database to store information about the source code, including IntelliSense information, for better IntelliSense and code-completion support. (However, Visual C++ 2010 does not support Intellisense for C++/CLI.) This version adds a modern C++ parallel computing library called the Parallel Patterns Library, partial support for C++0x, significantly improved IntelliSense, and performance improvements to both the compiler and generated code. This version is built around .NET 4.0, but supports compiling to machine code. The partial C++0x support mainly consists of six compiler features (lambdas, rvalue references, auto, decltype, static_assert, nullptr), and some library features (e.g. moving the TR1 components from std::tr1 namespace directly to std namespace). Variadic templates were also considered, but delayed until some future version due to lower priority which stemmed from the fact that unlike other costly-to-implement features (lambda, rvalue references), this one would benefit only a minority of library writers than the majority of compiler end users. By default, all applications compiled against the Visual C++ 2010 Runtimes will only work under Windows XP SP2 and later.
Beta 2 version number: 16.00.21003.01 (this is the version of compiler; the IDE itself has version number 16.00.21006.01)
RC version number: 16.00.30128.01
RTM version, also available in Windows SDK for Windows 7 and .NET Framework 4 (WinSdk v7.1). Version number: 16.00.30319.01
SP1 version, also available in KB2519277 update to Windows SDK v7.1: 16.00.40219.0