Read-only and constants variables
Distinguish between read-only and constants variables which is used in the programs?
Expert
Constants carry out same tasks as read-only variables with some differences.
The differences between the constants and read-only are:
Constants:
a) It supports value-type variables. b) Constants are dealt with at the compile-time. c) Constants can be used whenever it is very doubtful that the value will ever change. Read-only:
a) Read-only variables are evaluated at runtime. b) Read-only variables must be used when the run-time calculation is required. c) Read-only variables can hold the reference type variables.
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