CPP Function Variable Scope.
What is Variable Scope.
- It is to determines how long the variable is available to your program code and where it can be accessed.
- Variables declared within a block are scoped to that block and is local for the block. Those variables they can be accessed only within that block's braces.
- For a function, all variables defined inside the body of the function and parameters are local and can only be accessed inside the body of the function.
- Variables defined outside of any function have global scope, and thus are available from any function in the program, including the main() function.
- Local variables that have the same name as any global variables do not change the global variables.
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