Real-time reactive systems are among the most difficult systems to design and implement because of their complex functional and timing requirements. TROMLAB is a rigorous framework founded on TROM formalism for developing real-time reactive systems. The framework provides a number of tools that make formalism transparent to the application developer. The work presented in this thesis adds a new component to TROMLAB. The thesis gives a methodology for the implementation of a real-time reactive system designed and validated in TROMLAB. The methodology consists of defining a real-time execution model in C++ that fits the TROM formalism, automatically translating TROM specifications into Larch/C++, an interface specification language, and finally mechanically generating C++ code that conforms to the interface specification. The code generation methodology is illustrated for the Train-Gate-Controller problem, a bench-mark case study in real-time systems community.