amming is better for projects that require more complex algorithms or higher performance.
A Class is a user defined data-type which has data members and member functions. Data members are the data variables and member functions are the functions used to manipulate these variables and together these data members and member functions defines the properties and behavior of the objects in a Class.
Neither is “faster” than the other. In C++, structs and classes are the same thing. The only difference is that struct members are public by default, while class members are private. In compiled code, they are the same.
Why are classes better than structures?
Classes have the advantage of being reference types — passing a reference is more efficient than passing a structure variable with all its data. On the other hand, structures do not require allocation of memory on the global heap.
Differentiating the function will give its slope. Since slope is defined as the rate of change, then getting the maxima of the function's derivative will indicate where it is increasing at the greatest rate.
There's only one way in general: plug in a number and see what you get. If f(x)>g(x) for that value of x, then f will be larger than g until they intersect again.
Speed returns a transformed object with class "Speed" and units km/h. This function includes two arguments, distance and time. Therefore, it is possible to change the units of the speed to "m" to "s" for example. This function returns a data.
Macros have the distinct advantage of being more efficient (and faster) than functions, because their corresponding code is inserted directly into your source code at the point where the macro is called. There is no overhead involved in using a macro like there is in placing a call to a function.