str_setchr (STRING* string, var pos, var char)

str_getchr (STRING* string, var pos)

Sets resp. returns the ASCII character value at a certain position in a string. The ASCII values correspond to characters according to the following table: 
Char ASCII| Char  ASCII| Char  ASCII
-----------------------------------
Space  32 | @      64  | `      96
!      33 | A      65  | a      97
"      34 | B      66  | b      98
#      35 | C      67  | c      99
$      36 | D      68  | d     100
%      37 | E      69  | e     101
&      38 | F      70  | f     102
'      39 | G      71  | g     103
(      40 | H      72  | h     104
)      41 | I      73  | i     105
*      42 | J      74  | j     106
+      43 | K      75  | k     107
,      44 | L      76  | l     108
-      45 | M      77  | m     109
.      46 | N      78  | n     110
/      47 | O      79  | o     111
0      48 | P      80  | p     112
1      49 | Q      81  | q     113
2      50 | R      82  | r     114
3      51 | S      83  | s     115
4      52 | T      84  | t     116
5      53 | U      85  | u     117
6      54 | V      86  | v     118
7      55 | W      87  | w     119
8      56 | X      88  | x     120
9      57 | Y      89  | y     121
:      58 | Z      90  | z     122
;      59 | [      91  | {     123
<      60 | \      92  | |     124
=      61 | ]      93  | }     125
>      62 | ^      94  | ~     126
?      63 | _      95  | Cursor 127

Parameters:

string String pointer.
char ASCII value - see table. It can be alternatively given in lite-C as a letter in single quotes (e.g. 'A' for 65).
pos Position in the string, starting with 1 for the first character.

Returns:

char - ASCII value at the given position in the string, or 0 when the position is outside the string.

Speed:

Fast

Example:

STRING* s = "ABC";
...
str_setchr(s,1,'X'); // now s == "XBC"

See also:

STRING, str_to_num, str_for_num, str_chr, strio.c

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