The choice of computer languages for use in safety-critical systems

The paper reviews the choice of computer language for use in safety-critical systems. The advice given reflects both civil and military requirements. A comparison is made between assembly-level languages, the language C, CORAL 66, Pascal, Modula-2 and Ada. It is concluded that a well defined sub-language is essential for use in safety-critical projects, and a guide is provided for project managers and designers on the characteristics which such a subset should possess. >