Differentiate read-only variables and constants
Difference between read-only variables and constants which are used in programs?
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The constants perform similar tasks as the read-only variables with a number of differences. Differences between read-only and constants are as follows:
Constants:
1. Constants deal at compile-time.
2. It supports value-type variables.
3. It must be used when it is not likely that the value will ever modify.
Read-only:
1. Read-only variables are estimated during runtime.
2. These variables could hold reference type variables.
3. These variables must be used when run-time calculation is needed.
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