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

1. Have a look at sum.cpp. Do you think it will compile? If so, what will the output be?
2. 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!");
   

3. Uncomment line 13. What happens when you try to compile?
4. 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  complex.cpp  complex.hpp  test.cpp

complex.cpp contains a working version of the complex number class. Change the class declaration and definitions to use type templating.

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