20150921 What to learn: enumerations, functions:

enumeration : Constant groups

Constants: variables preceded by const

Index of the enumeration:

Function:

Modifier returns a value function name (parameter 1, parameter 2, ...). Formal parameter N)

{

function body

}

Write functions when a process is completely closed, complete, and needs to be used multiple times.

Written outside the main function, class inside

No return value no parameter

There are return values, no parameters.

There are return values, parameters of the

There are multiple return values

20150921 What to learn: enumerations, functions: