Question

Convert String to Char

Asked by: jexd99


I have a function named F1, which accepts and returns a char. I must call this as shown below, but the "uppercase" function makes value a string and is therefore incompatible. What is the best way to convert to uppercase as shown below, then convert to a char field (value is always 1 byte) to pass to the function?


Function F1(Ch : Char) : Char;

--------
F1(UpperCase(Value))

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Asked On
2003-02-16 at 18:58:54ID20516514
Tags

string

,

char

,

convert

Topic

Delphi Programming

Participating Experts
3
Points
50
Comments
6

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Answers

 

by: Alisher_NPosted on 2003-02-16 at 19:23:59ID: 7963432

try UpCase() instead

 

by: jexd99Posted on 2003-02-16 at 19:30:39ID: 7963458

What about F1(LowerCase(Value))... UpCase does not have a corresponding function that I am aware of (for lowercase).

 

by: Alisher_NPosted on 2003-02-16 at 19:40:11ID: 7963493

1) you can easily write your own function

// dirty example:
function LowCase( Ch : Char ) : Char
begin
 if Ch in ['A'..'Z'] then Result := Chr(  Ord( Ch ) + $20 ) else Result := Ch;
end;

2) what is the practical usage of two-way conversion ? if you going to compare some set of keywords or commands in your program usually it is enough to convert them to unique case, does not matter which one :)

 

by: Slick812Posted on 2003-02-16 at 21:46:40ID: 7963900

hello jexd99, maybe you don't know you can access individual charters in a string with the Index? you might try -

Function F1(Ch : Char) : Char;
begin
Result := UpperCase(Ch)[1];
end;

 

by: kretzschmarPosted on 2003-02-16 at 22:41:02ID: 7964078

yeah, slick is right

charvar := stringvar[1];

but you should call it

F1(UpperCase(Value)[1]);

meikl ;-)

 

by: jexd99Posted on 2003-02-17 at 09:40:29ID: 7967587


Thanks for all the different opinions, I should have asked sooner rather then spending hours trying to get a workaround on this :)   I thought I already tried the index option on the string, but I must have had something else wrong when I tried this, as I just attempted this again based on your post and it worked without a problem.  Thanks again everyone. :)  

20120131-EE-VQP-002

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