* substring offset
@ 2002-08-31 18:11 Ken Martwick
2002-08-31 21:21 ` Ibraheem Umaru-Mohammed
0 siblings, 1 reply; 2+ messages in thread
From: Ken Martwick @ 2002-08-31 18:11 UTC (permalink / raw)
To: linux-c-programming
In this code snippet,
findptr = strstr(realine[n], search);
if(findptr)
{
diff = (int)(findptr - realine[n]);
why isn't "diff" the offset of "search" in "realine[n]"? How
can I calculate the offset?
Ken Martwick
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: substring offset
2002-08-31 18:11 substring offset Ken Martwick
@ 2002-08-31 21:21 ` Ibraheem Umaru-Mohammed
0 siblings, 0 replies; 2+ messages in thread
From: Ibraheem Umaru-Mohammed @ 2002-08-31 21:21 UTC (permalink / raw)
To: Ken Martwick; +Cc: linux-c-programming
["Ken Martwick"="Ken"]
Ken >> In this code snippet,
Ken >>
Ken >> findptr = strstr(realine[n], search);
Ken >> if(findptr)
Ken >> {
Ken >> diff = (int)(findptr - realine[n]);
Ken >>
Ken >> why isn't "diff" the offset of "search" in "realine[n]"? How
Ken >> can I calculate the offset?
Ken >> Ken Martwick
Ken >>
You want to use the address of realine[n]. i.e
,---- <code>
| ...
| findptr = strstr(&realine[n],search);
| if( findptr )
| {
| diff = findptr - &realine[n];
| ...
`----<code/>
Kindest regards,
--ibz.
--
Ibraheem Umaru-Mohammed
"ibz"
umarumohammed (at) btinternet (dot) com
^ permalink raw reply [flat|nested] 2+ messages in thread
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