CHAPTER 23
Constants
A constant is a variable that has a value which cannot be changed once the constant has been assigned.
Constant variables
A variable can be made into a constant by adding the const keyword either before or after the data type. This modifier means that the variable becomes read-only, and it must therefore be assigned a value at the same time as it is declared. Attempting to change the value will result in a compile-time error.
const int var = 5;int const var2 = 10; // alternative order
Constant pointers
When it comes to pointers, const can be used in two ways. First, the pointer can be made constant, which means that it ...
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