Objective-C suffix file description)

Since multiple forms of source files can be written in objective-C, different file extensions can be used to differentiate them. Table 2-1 shows the file extension description:

Table 2-1 Description of file extensions

File Extension	DescriptionMing	BackupNote
. c	C language source Program file
. CC or . CPP	C ++ source program file
. H	Header file
. M	Objective-CSource program file	CodeIncludeObjective-CAndCStatement
. Mm	Objective-C ++Source program file	the Code contains Objective - C and C ++ statement
. O	compiled files