VC - VAX C SYSTEM (kluge boot version, subset only)
Program files available:
VCSTDIO.H	- constants & extern declarations for I/O lib
VCSTDDEF.H	- define macros for compiler
VCGLBDEF.C	- global defs
VCGLBDECL.C	- global declarations
VC1 - VC6.C	- Compiler source code (for VAX C...probably can compile
			itself, but who knows really...?)
VC.TSK		- VMS .exe file (renamed..name back)

LIBRARY
VCDISKLIB.C	IO function source
VCUTILIB.C	Utility functions
VCRUNLIB.C	C version of compiler support routines
VCRTLIB.OLB	VMS Runtime support

	This compiler is descended from Dr. Dobbs' Journal Small C
with extensions all over the place. No support for floats and
longs exists.  Basically the C features from
Unix v7 not found completely include
	Floats/longs
	multidimensional arrays
	structures
	sizeof
	typedef
	casts
	#line
	#undef

Some of these have been added; experiment.
Note that for VAX where addresses are 4 bytes long, integers may default to
long integers....

	Switches for VC

	-c		Produce commented assembly output
	-o file		Output becomes "file" (name object)
	-r		Include I/O redirection ability in output files
	-t		Trace messages in program (trace routine calls)
	-v		Verbose mode toggle
	-x		VAX macro code output (only kind available)
	+label#		start generating internal labels of form
			cc"label#" (e.g. +label 50 starts producing labels
			at cc50:).
Command lines use Unix or LBL Tools style redirection when that is included
(as it generally is by default).

	Note: register declarations are generally no-ops. The code generator
here is a real crock; its only virtue is that it IS native mode VAX
assembly language, put out in about 20 primitives translated from the 8080
Small C compiler's.

Function Library

The following routines may exist:

getchar()	get char from stdin
getkey()	check for key input (returns char typed or eof)
gets(s)		read a string from stdin
printf(fmt,arg1, arg2,...)	Formatted print to stdout
		; see fprintf for format. \n means newline.
putchar(c)	Write character c to stdout
puts(s)		Write string s to stdout

fclose(fp)	Close a file (note def of FILE type in qstdio.h)
		;	FILE *fp
fflush(fp)	Flush output file buffer
fgets(s,n,fp)	Get string from file
		;	char *s
		;	int n	;length of string max
		;	FILE *fp	;file pointer
fopen(fnam,mod)	Open a file
		;	char *fnam, *mode	;mode is "r" or "w" or "rb"
		;				; or "wb" for binary
fprintf(fp,fmt,arg1, ...)	Write formatted output to a file
		; FILE *fp
		; char *format
		;	note Format works but the only conversions supported
		;	are %c (char), %s (string), %d (decimal), %u (unsigned
		;	decimal), %o (octal), and %x (hex).
fputs(s,fp)	Write string to file
getc(fp)	read char from file
putc(c,fp)	put char to file
ungetc(c,fp)	push a char back into an input file

system I/O
close(fd)	Close a file ; fd is an int
creat(fn,pm)	Create new (or reuse old) file
		;	char *filename;
		;	int pmode	;protection mode , no-op
open(fnam,rwmode)	Open existing file
		; char *fnam
		; int rwmode	(0=read, 1=write) (no mode 2=both)
read(fd,buffer,n)		Read file (in 1 block multiples)
		; int fd,n
		; char *buffer
		;reads n bytes from file fd into buffer.
write()		Write file (in 1 block multiples)

atoi(s)		ASCII string to integer
		;	char *s
		; example: atoi("123") returns 123
chlower()	Convert uppercase letter to lowercase
chupper()	Convert lower to upper case letter
index(s,c)	Look for given character c in string s
		; returns null or pointer to c in s
itob(n,s,b)	convert integer to string in base chosen in range 2-36
		; int n,b	;number, base
		; char *s	;string pointer
sprintf()	format a string
strcat(s1,s2)	Apppend one string s2 to end of another s1
strcmp(s1,s2)	Compare 2 strings
strcpy(s1,s2)	copy one string into another (copy s2 into s1)
strlen(s)	Length of string
strmov(s1,s2)	copy one string into another (copy s2 into s1)
tolower(c)	convert a character to lowercase
toupper(c)	convert a character to uppercase

isalnum(c)	Is char a letter or number?
isalpha()	...a letter?
isascii()	...an ASCII character
iscntrl()	...a control char
isdigit()	...a digit
islower()	...a lower case letter
isprint()	...a printable character
ispunct()	...a punctuation mark
isspace()	...white space
isupper()	...an uppercase letter

exit(n)		exit program. n=0 ==>OK. Non-0 implies error.

malloc(n)	Allocate blk of free memory space
		; unsigned int n = amount of mem to alloc. Start of space
		; or 0 returns.
maxsbrk()	Report free memory size avail
moat(size)		Set size of stack space (unsigned int)
		; sets size of area between dynam mem and stack
imax(m,n)		Max of 2 integers m,n
imin(m,n)		Min of 2 ints m,n
peek(addr)		Look at a byte of memory (unsigned addr)
poke(addr,val)		change a byte of memory
wpeek()		Look at a work of memory
wpoke()		change a memory word