Code of the Marrow-fifth chapter-function

Function: Easy to understand and reuse

The advantages of small program functions do not come out, the code is very few cases, it is easy to grasp the function of each line.

The program is becoming larger and bigger, not easy to grasp the global , in addition, may use very similar operations many times.

After the number of rows, the code of a certain number of lines as a whole and name it, this is the function.

The code blocks that need to be executed repeatedly are encapsulated into functions, which are called repeatedly , making the source code compact and clear.

Encapsulate the same operation (that is, a function)

(1) To make the procedure shorter;

(2) Avoid repeating code that allows the reader to read the same content repeatedly;

(3) Make the procedure easier to understand.

Code of the Marrow-fifth chapter-function