There is no good example of register usage when using modern compilers (read: last 15+ years, and note that this answer is from 2008) because it almost never does any good and can do some bad. When you use register, you are telling the compiler “I know how to optimize my code better than you … Read more
There may be some confusion here about what “K&R C” is. The term refers to the language as documented in the first edition of “The C Programming Language.” Roughly speaking: the input language of the Bell Labs C compiler circa 1978. Kernighan and Ritchie were involved in the ANSI standardization process. The “ANSI C” dialect … Read more
K&R syntax is obsolete, you can skip it unless you have to maintain very old code. // K&R syntax int foo(a, p) int a; char *p; { return 0; } // ANSI syntax int foo(int a, char *p) { return 0; }