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2. Data types
The notion of type is of prime importance in Ada, since it is, for its designers, the best means of ensuring the accuracy of a processing description. Among other things, typing determines the amount of memory occupied by a variable, and the compiler will require that any expression of a given type can only be housed in a compatible space (variable, procedure or function parameter, etc.). Two types are compatible if they are identical, or if they have common values.
Example: Positive and Integer types are compatible. However, some assignments from an Integer to a Positive will cause problems at runtime for values of the Integer type that are not included in the Positive type. On the other hand, assigning a Positive expression to an Integer variable will never pose a problem.
Globally, Ada defines...
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Data types
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Bibliography
- (1) - - "Ada Programming", Wiki Books https://en.wikibooks.org/wiki/Ada_Programming .
- (2) - - "Ada Reference Manual",
Standards
- Langage de programmation Ada. - ISO/CEI 8652 - 2012
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