DATA TYPES
One of the quintessential aspect of a Programming Language are its Data Types that it provides. These are important to learn, especially in C++ because, while they might look the same, they all serve widely different purposes.
Let's begin by looking at the following screenshot:
Through this, I have defined two structs that will act as the basis of the type of data type you can include; fixed data types and non-fixed.
Fixed data types are those of which that have a signed integer type associated iwth them with the width that corresponds with the bit count ranging from 8 to 64. Typically speaking, these data types are much faster compared to the non-fixed counterparts due to the lack of lease in their data range
For example, data types that start with u typically have a range of 0 to 255.
The u is a declarative that tells the compiler that in the bit count range, the constant 1 is used as the unsigned integer type.
Whereas, int_t is a surrogate of uint_t because it's data range is much more vast at the expense of a longer compilation time, (the range being -128, 127)
Another viable method of declaring data types and variables is through macros. C Macros are powerful because you are able to declare them like you would with any other variable except with the added benefit of one-liners in order to make your code cleaner.
END RESULT:
Hello Harry
NOTE:
It should be noted that while you can make the declrative of a macro anything such as an int, char, string, bool, double, float, const, etc
You CANNOT define a macro as a struct otherwise it will not work
By all means, you can do what I did in the first screenshot and define a macro with the same name as the struct but it needs to explictially state that it is a struct otherwise it will not work for some reason?!