To ensure that a certain block of code is executed regardless of whether the condition in the if statement is true or false, you can use the finally block in a try-catch-finally structure. The code in the finally block runs after the try block, whether an exception is thrown or not, making it useful for cleanup or resource release tasks.

To create an infinite loop in C++, the condition in a while loop must always evaluate to true. This means that as long as the condition is true, the loop will continue executing indefinitely. Infinite loops can be useful in some scenarios but should be used with caution to avoid program hang or crashes.

Alice can achieve this using the concept of polymorphism, specifically method overloading. By overloading the computeArea function with different parameter types (radius for circles and length and breadth for rectangles), she can have a single function name that behaves differently based on the input, without renaming the functions.

Functions in C++ are declared by specifying their return type, followed by the function name and parameters enclosed in parentheses. The correct way to declare a function that takes two integers and returns their sum is by declaring the return type as int and specifying the parameters with commas in between. So, the correct declaration is int sum(int a, int b).

The '__forceinline' keyword is a directive to the compiler that strongly enforces inlining of the function, even if the compiler would not typically inline it based on its heuristics. This keyword provides a more forceful hint to the compiler compared to the 'inline' keyword, ensuring that the function is inlined whenever possible.

Inline functions are expanded at the calling point. When you use the inline keyword, the compiler replaces the function call with the actual function code at the location where the function is called, reducing the overhead of a traditional function call.

A for loop with an empty condition (for( ; ; )) in C/C++ will run indefinitely until it is explicitly exited using a break statement or until an exit condition is encountered within the loop. It's often used for creating infinite loops, but caution is required to avoid infinite execution.

A while loop can potentially become an infinite loop if no increment or decrement operation is performed on the loop control variable within the loop body. This happens when the loop condition always evaluates to true.

In C++, an array is not a primitive data type; it's a user-defined data type used to store a collection of elements of the same data type. Primitive data types include integers, floats, and booleans, among others.

To conditionally compile code in C++, you can use preprocessor directives like #ifdef DEBUG, where DEBUG is typically defined in debug configurations. This allows Samuel to include or exclude specific sections of code based on whether he's in debug mode or not.