If code block of word has serial number and we would to delete the serial number, we can right click it and click serial number of floating window.
When using if judge equality, we can write if(null == a), writing constants in front of variables, in order to avoid we mistakenly writing == as =.
Annotation: using to explain “why coding the line code“, but not “what coding the line code”.
when using scanf function, you should remember s look like &. forget & again…when I no pay attention to it which means I can’t concentrate it. so, I need break time.
if we can using programming(machine) language directly translate nation(math) language. just do it !
Modular Design
Good naming style use English variable name, in order to be self-evident. don’t only use a, b, c, d and so on.
Control learning time & Need playing time
why VA space < PA space? because map can 1 to many, 1 to 1, many to many, many to 1