archer2-cpp

Templates exercise

In your clone of this repository, find the 5-templates exercise. It contains two sub-directories part1 and part2.

Part 1

List the files in part1:

$ cd archer2-cpp/exercises/5-templates/part1
$ ls
Makefile  sum.cpp

Have a look at sum.cpp. Do you think it will compile? If so, what will the output be?
Compile and run the provided code with make && ./sum. Is the result what you expected? Can you explain what is happening at line 12?
```
11    sum(3, 4);
12    sum(3.2, 5.1);
13    // sum("Hello", "World!");
```
Uncomment line 13. What happens when you try to compile?
Change the sum() function to use type templating. How does this change the output? Hint: C++ will not automatically convert from a char array to std::string so you will need to be explicit.

Part 2

List the files in part2:

$ cd archer2-cpp/exercises/5-templates/part2
$ ls
Makefile  array.hpp  main.cpp

array.hpp contains the beginnings of a FixedSizeArray class. Update the class declaration and definitions to use type and non-type template parameters. Additionally, add new class member functions as directed by the TODO comments. main.cpp provides instructions for trying out and testing your implementation.

As before, you can compile with make.

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