To try this recipe, perform the following steps:

1. From a new Terminal, run the following to download the source code:

> cd ~/
> git clone https://github.com/PacktPublishing/Advanced-CPP-CookBook.git
> cd Advanced-CPP-CookBook/chapter02

2. To compile the source code, run the following:

> mkdir build && cd build
> cmake ..
> make recipe01_examples

3. Once the source code is compiled, you can execute each example in this recipe by running the following commands:

> ./recipe01_example01
The answer is: 42

> ./recipe01_example02
terminate called after throwing an instance of 'std::runtime_error'
what(): The answer is: 42
Aborted

> ./recipe01_example03
The answer is: 42

> ./recipe01_example04
terminate called after throwing an instance of 'std::runtime_error'
what(): The answer is: 42
Aborted

> ./recipe01_example05
foo: 18446744069414584320
foo: T is too large

In the next section, we will step through each of these examples and explain what each example program does and how it relates to the lessons being taught in this recipe.