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What means "Pointer to ...."

Created by: royboy at: 3/27/2012 9:14 AM (1 Replies)

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3/27/2012 9:14 AM	Rate (0)
royboy Posts: 4 Rating: (0)	1:POINTERTO BYTE 2:POINTERTO WORD 3:POINTERTOARRAY[0..32000]OFREAL some guy gives me one SCL code list: [code]FUNCTIONARRAY_VAR:REAL VAR_INPUT pt:POINTERTOARRAY[0..32000]OFREAL; size:UINT; END_VAR VAR avg:REAL; i:UINT; stop:UINT; END_VAR stop:=SHR(size,2)-1; avg:=pt^[0]; FORi:=1TOstopDO avg:=avg+pt^[i]; END_FOR; avg:=avg/UINT_TO_REAL(stop+1); array_var:=(pt^[0]-avg)(pt^[0]-avg); FORi:=1TOstopDO array_var:=array_var+(pt^[i]-avg)(pt^[i]-avg); END_FOR; ARRAY_VAR:=ARRAY_VAR/UINT_TO_REAL(stop); END_FUNCTION [/code] this program has some faulse in it ,compiled wrong . i'm in trouble, what's mean POINTERTOARRAY[0..32000]OFREAL & pt^[i]. maybe i guess the pointer data ,but i can't find it in the SIEMENS's book server. itintroduce the pointer only a little , by the way not about this using i find the pointer in the PASCAL language ,the using ex. pointerDATA:^integer; pointerDATA:^real; just above. so,i need somebody can help me tosolve the above problems , to find out what's the reason is . if someone has the E-book about the SCL (only in English) ,pls send them to me , thx ! i'm poor in english ,so i hope you don't make mistake my means ,thx above .
royboy Posts: 4 Rating: (0)	Last edited by: O_Moderator at: 3/27/2012 12:55 PM Last edited by: O_Moderator at: 3/27/2012 12:50 PM contact data deleted. And subject edited
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3/27/2012 12:59 PM	Rate (0)
O_Moderator Diamond Member Joined: 4/24/2009 Last visit: 8/20/2024 Posts: 2682 Rating: (135)	Thread closed, because question is already published in the following thread SCL code help ~~~ what's mean POINTER TO datatype Best regards O_Moderator
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