Automatic code generation plays an important role in ensuring the reliability and correctness of software programs. Reliable programs can be obtained automatically from verified program specifications by code generators. The target languages of the existing code generators are mainly functional languages, which are relatively less used than C/C++. As C/C++ is widely used in the industry and many fundamental software facilities and the correctness verification of C/C++ programs is difficult and cumbersome, this paper provides an automatic conversion framework that allows to generate C++ implementation from verified Isabelle/HOL specifications. The framework is characterized by combining the verification convenience of Isabelle/HOL and the efficiency of C++. Since the correctness of the functional Isabelle/HOL specification can be guaranteed by interactive proofs, the correctness of the relevant generated C++ implementation can also be maintained.
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