- struct data type
- long int data type
- unsigned int data type
- =+ (and relatives) had changed to += (and relatives)
Features added after K&R but before the begining of the ANSI C process (IE, these are NOT in K&R):
- void functions
- void * data type
- struct field names in a seperate name space for each struct type
- Assignment operator works for struct data type
- The stdio library and some other standard library functions became available with most implementations (these already existed in at least one implementation at the time of K&R, but were not really standard, so not documented in the book).
Several features were added in the ANSI C standardisation process itself. Most notably, function prototypes (borrowed from C++). Therefore, these were also NOT in K&R.