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Is there any benefit to declare a local variable as "const" if I know that I won't be chaning its value?
Thanks,
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What is the benefit of const keyword in programming? Specifying a variable as const states that the variable's value should never change after the initial assignment. This allows the compiler to perform additional tests at compilation (validating your code).
Using the #define method of declaring a constant enables you to declare a constant in one place and use it throughout your program. This helps make your programs more maintainable, because you need to maintain only the #define statement and not several instances of individual constants throughout your program.
A constant is very similar to variables in the C programming language, but it can hold only a single variable during the execution of a program. It means that once we assign value to the constant, then we can't change it throughout the execution of a program- it stays fixed.
We declare constants because we will always need some "magic numbers" that are fixed in the code. Using constants means that they are easier to spot, and that when you change them you will change all of them with a edit.
You would usually use a const throughout your entire solution. But the benefits for using in a local scope, would be that you know some place else in your scope you won't be changing it. And also if someone else is working on this code, they will know not to change it as well. This makes your program more maintainable, because you need to maintain only the const (even if its just in a local scope)
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