For each of the following pairs of prototypes, indicate whether it is a valid or invalid example of function overloading

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For each of the following pairs of prototypes, indicate whether
it is a valid or invalid example of function overloading in C++. If
it is invalid, state why.
In the following C++ function, indicate whether
and where dangling pointers / lost objects are created:
State any two characteristics that a language
must possess so that it can use garbage collection to reclaim heap
storage.
Give one advantage each for the following decisions in designing
a programming language. Use one sentence or less.