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1.5.2 Conforming Programs

Code conforming with the requirements of this standard shall adhere to the following:

  1. Conforming code shall use only those features of the language syntax and semantics that are either specified in this standard or defined using the extension mechanisms specified in the standard.

  2. Conforming code may use implementation-dependent features and values, but shall not rely upon any particular interpretation of these features and values other than those that are discovered by the execution of code.

  3. Conforming code shall not depend on the consequences of undefined or unspecified situations.

  4. Conforming code does not use any constructions that are prohibited by the standard.

  5. Conforming code does not depend on extensions included in an implementation. Use of Implementation-Defined Language Features Character Set for Portable Code

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