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how to replace a single character

Posted on 1999-01-25
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Last Modified: 2010-05-03
Does anyone have a routine or have a suggestion on  how to replace a single character - embedded within a string with a space or another character
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Question by:ttrogden
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11 Comments
 
LVL 12

Expert Comment

by:mark2150
ID: 1470659
marker = instr( source$, anychar$ )
if marker > 1 then
   source$ = left( source, marker -1 ) & right( source, len( source ) - marker )
endif

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Expert Comment

by:sbmc
ID: 1470660
The following code will replace all occurrences of "c" in s$ to spaces


s$="abcabcabcabcabc"
startpos=1
do while true
    thispos=instr(startpos,s$,"c")
    if thispos = 0 then exit do
    s$=left(s$,thispos-1) & " " & mid(s$,thispos+1)    ' replace c with space
    startpos=thispos+1
loop

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LVL 3

Expert Comment

by:traygreen
ID: 1470661
If you are using VB 6 use the replace function
 Replace(<entire string>,<search string>, <replace string>)
eg
msgbox Replace("123456123111221", "12", "Z")
will show a message box with a text value of "Z3456Z311Z21"
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LVL 7

Expert Comment

by:Inteqam
ID: 1470662
mark is right but :
marker = instr( source$, anychar$ )
if marker > 1 then
   source$ = left( source, marker -1 ) & Youcharachter &right( source, len( source ) - marker )
endif


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Author Comment

by:ttrogden
ID: 1470663
sorry but i posted this question for my boss and he said that sbmc's answers worked for him the best - thanks guys -


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LVL 18

Expert Comment

by:mdougan
ID: 1470664
There is a slightly simpler syntax for this:

Public Sub Replace(sSource As String, sTarget As String, sFill As String)
Dim Pos As Long
Pos = InStr(sSource, sTarget)
Do
    If (Pos > 0) Then
        Mid$(sSource, Pos, 1) = sFill
    End If
    Pos = InStr(sSource, sTarget)
Loop While Pos > 0

End Sub

(If you want to be really careful, you would want to check that sTarget and sFill are only one character)

MD
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LVL 1

Expert Comment

by:amithvs
ID: 1470665
Try this
srchstr is the string in which character "t" is replaced by "d"
Mid(srchstr, InStr(1, a, "t"), 1) = "d"
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Author Comment

by:ttrogden
ID: 1470666
how do i assign points to sbmc??
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LVL 18

Expert Comment

by:mdougan
ID: 1470667
Reject any one else's answer, and ask sbmc to resubmit their comment as an answer.
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Expert Comment

by:DevlonDuthie
ID: 1470668
Have to agree with sbmc
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Accepted Solution

by:
sbmc earned 60 total points
ID: 1470669
Now submitted as an answer. Thanks for your comments


       s$="abcabcabcabcabc"
       startpos=1
       do while true
           thispos=instr(startpos,s$,"c")
           if thispos = 0 then exit do
           s$=left(s$,thispos-1) & " " & mid(s$,thispos+1)    ' replace c with space
           startpos=thispos+1
       loop
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