ic man page fixes

[mcdaniel at uiucdcsb.CS.UIUC.EDU]

Looking at the man page after installing geoff at imagen's fixes
(thanks!), I noticed a few glitches.  For example, the syntax of the
"if" statement as given was wrong, there was no discussion of strings
or of auto-printing of expression values, there were typos, et cetera.
Here are context diffs, suitable for patch, for ic.1:

*** ic.1	Mon Apr 21 22:41:51 1986
--- new.ic.1	Mon Apr 21 22:41:52 1986
***************
*** 6,8
  .SH DESCRIPTION
! \fIIc\fP is an attempt at a more useful calculator than provided by
  \fIbc\fP(1).  Instead of using arbitrary precision integers (or fixed

--- 6,8 -----
  .SH DESCRIPTION
! \fIIc\fP is an attempt at a more useful calculator than
  \fIbc\fP(1).  Instead of using arbitrary precision integers (or fixed
***************
*** 11,13
  As a further aid, \fIic\fP has many standard mathematical functions
! pre-programmed and, of course, it can be programed by the user as
  well.

--- 11,13 -----
  As a further aid, \fIic\fP has many standard mathematical functions
! pre-programmed and, of course, it can be programmed by the user as
  well.
***************
*** 17,20
  statements at ``reasonable'' times.  \fBNewline\fP terminates either
! expressions or single statements typed by the user, inside compound
! statements or  function definitions, only a \fB;\fP terminates.
  This is designed to be more ``natural'' than \fIbc\fP was when

--- 17,20 -----
  statements at ``reasonable'' times.  \fBNewline\fP terminates either
! expressions or single statements typed by the user;  inside compound
! statements or function definitions, only a \fB;\fP terminates.
  This is designed to be more ``natural'' than \fIbc\fP was when
***************
*** 34,39
  Other operands
! 	floating point numbers - can include exponent, need not
! 		include decimal point nor sign.
! 	octal numbers - start with a 0, eg 014 is the same as 12.
! 	hexdecimal numbers - start with "0x", eg 0x1a is the same as 26.
  

--- 34,45 -----
  Other operands
! 	floating point numbers - can include exponent, need
! 		include neither decimal point nor sign.
! 	octal numbers - start with 0; e. g., 014 is the same as 12.
! 	hexadecimal numbers - start with "0x"; e. g., 0x1a is the same as 26.
! 	strings - enclosed in double quotes, ";
! 		only permitted in read statement, function arguments;
! 		escape sequences are \\0, \\b, \\n, \\t, \\f
! 		(null, backspace, newline, tab, form feed), but
! 		otherwise \\x is x for any character x except newline;
! 		e. g.  rc = printf("Why \\"air\\"?\\n").
  
***************
*** 40,42
  	(E)
! 	
  	name (E)

--- 46,48 -----
  	(E)
! 
  	name (E)
***************
*** 59,61
  	if (E) S
! 	if (E) S then S
  	while (E) S

--- 65,67 -----
  	if (E) S
! 	if (E) S else S
  	while (E) S
***************
*** 62,64
  	do S while (E);
! 	for (opt-E;opt-E; opt-E) S
  	;

--- 68,70 -----
  	do S while (E);
! 	for (opt-E; opt-E; opt-E) S
  	;
***************
*** 69,71
  Function definitions
! 	define name (name,...,name)
  	{

--- 75,77 -----
  Function definitions
! 	define name (name, ... , name)
  	{
***************
*** 71,74
  	{
! 		auto name, name;
! 		
  		S ... S

--- 77,80 -----
  	{
! 		auto name, ... , name;
! 
  		S ... S
***************
*** 80,82
  	asin, acos, atan, atan2, sinh, cosh, tanh, printf
! 	
  	Note: trig functions take and return arguments in

--- 86,88 -----
  	asin, acos, atan, atan2, sinh, cosh, tanh, printf
! 
  	Note: trig functions take and return arguments in
***************
*** 83,85
  	degrees - not radians!
! 	
  	Printf accepts a reasonable sub-set of the stdio

--- 89,91 -----
  	degrees - not radians!
! 
  	Printf accepts a reasonable sub-set of the stdio
***************
*** 88,90
  
! 	These functions are adapted from the C math library and,
  	further questions about algorithm and argument usage

--- 94,96 -----
  
! 	These functions are adapted from the C math library;
  	further questions about algorithm and argument usage
***************
*** 91,93
  	should be directed to the manual.
! 	
  Other commands:

--- 97,99 -----
  	should be directed to the manual.
! 
  Other commands:
***************
*** 96,98
  	expr1 # expr2		print expr1 in base expr2
! 	
  .fi

--- 102,104 -----
  	expr1 # expr2		print expr1 in base expr2
! 
  .fi
***************
*** 98,99
  .fi
  All function arguments are passed by value.

--- 104,106 -----
  .fi
+ .PP
  All function arguments are passed by value.
***************
*** 99,100
  All function arguments are passed by value.
  

--- 106,124 -----
  All function arguments are passed by value.
+ .PP
+ The value of a statement that is an expression is
+ printed, unless the main operator is an assignment or the statement is
+ inside a function or a compound statement.
+ E. g.
+ .nf
+ 	11
+ 	5 + 6
+ 	5 + (a = 6)
+ .fi
+ all print 11, but
+ .nf
+ 	{ 11; }
+ 	if (b) 5 + 6;
+ 	b = 5 + (a = 6)
+ .fi
+ print nothing.
  
***************
*** 106,108
  	auto	a, b, c, i, s;
! 	
  	a = 1;

--- 130,132 -----
  	auto	a, b, c, i, s;
! 
  	a = 1;
***************
*** 120,122
  .fi
! defines a functino to compute an approximate value of the exponential
  function and

--- 144,146 -----
  .fi
! defines a function to compute an approximate value of the exponential
  function and
***************
*** 125,127
  	for (i = 1; i < 10; i++)
! 		printf ("%g\n", exponent (i));
  .fi

--- 149,151 -----
  	for (i = 1; i < 10; i++)
! 		printf ("%g\\n", exponent (i));
  .fi