Expert C Programming

So if you add a prototype for a K&R C definition including a short, the prototype will cause a short to be passed, but the d ...

Note that if you put the functions in the same file where they are called (file 2, here), the behavior changes. The compiler wil ...

Don't Mix Old and New Styles in Function Declaration and Definition Never mix the old and new styles of function declaration and ...

The C compilers from Microsoft and Borland provide getch() (or getche() to echo the character) to get input character-by-charact ...

} That last line—system("stty cooked");—is necessary because the terminal characteristics persist after the program finishes. If ...

variable errno that is part of ANSI standard C. If a library or system call encounters problems, it will set errnoto indicate th ...

echo(); endwin(); / finish curses / } Compile this with cc foo.c -lcurses. Notice how much neater the output is when run under c ...

counter in the handler routine. Every time a character is sent from the keyboard, the SIGPOLL signal will be sent to the process ...

This is an unfortunate quirk popularized with ANSI C: calls to a function and calls to a function through a pointer (or any leve ...

all languages, not just C) is to code for debuggability. When you write the program, provide the debugging hooks. Handy Heuristi ...

the table serially, you get a jumpstart to the likeliest element to contain your value. This is achieved by loading the table ca ...

if (strcmp(f->fname, s) == SAME) { return f; } } / file not found, so make a new one: / f = allocate_file(s); f->flink = f ...

(float) 3 it's a type conversion and the actual bits change. If you say (float) 3.0 it's a type disambiguation, and the compiler ...

10, sizeof(int), (int ()(const void , const void *)) intcompare ); As an impractical example, you can create a pointer to, for e ...

What does that print? (Hint: it's not "have fun"!) David wrote the eponymous Korn shell, which is widely regarded as much cleane ...

RUN LIST NEW BYE (^) OLD filename SAVE filename Program commands: variable names A to Z variables initialized to 0 on RUN FOR va ...

Exactly one space is needed between the OLD or SAVE command and the filename. ALL INPUT MUST BE UPPERCASE. Limits: Line numbers: ...

170 GOSUB 5000 180 GOTO 10 200 PRINT "You have crashed." 210 GOTO 170 1000 REM Initialise 1010 V = 70 1020 F = 500 1030 H = 1000 ...

4520 NEXT J 4530 RETURN 5000 PRINT "Do you want to play again? (0 = no,1=yes)" 5010 INPUT Y 5020 IFY=0THEN 5040 5030 RETURN 5040 ...

fprintf(f,I))t('O',4,"r",while(fgets(B,R,f))(*Q(B,"\n")=0,G()) )X 0:default:G() ;}_ 0;}G(){l=atoi(B);m[l]&&free(m[l]);(p ...