What is promotion and demotion in programming?

Answer 1

In programming, promotion and demotion refer to the conversion of data types between different levels of precision or size. Promotion occurs when a smaller data type (like an int) is automatically converted to a larger type (like a float) to avoid data loss during operations. Demotion, on the other hand, involves converting a larger type to a smaller one (e.g., from float to int), which may lead to a loss of information or precision. These conversions can be implicit or explicit, depending on the programming language and context.