cybermilky
asked on
Function VS Procedure
I'm confused between Function and Procedure. What are their difference?
ASKER CERTIFIED SOLUTION
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procedure AbbreviateName(const First, Last: String): String; <-- ????
var
begin
ShowMesage(First[1] + Last[1]);
end;
Better dbl-check your procedure again....
Russell
OOPS!
<SMILE>
Shane
<SMILE>
Shane
ASKER
function AbbreviateName(First, Last: String): String;
- means this function returns the result value in String?
While the procedure will not return values, so end of the first line of procedure will not have the return type.
Am I correct?
- means this function returns the result value in String?
While the procedure will not return values, so end of the first line of procedure will not have the return type.
Am I correct?
ASKER
function AbbreviateName(First, Last: String): String;
- means this function returns the result value in String?
While the procedure will not return values, so end of the first line of procedure will not have the return type.
Am I correct?
- means this function returns the result value in String?
While the procedure will not return values, so end of the first line of procedure will not have the return type.
Am I correct?
ASKER
function AbbreviateName(First, Last: String): String;
- means this function returns the result value in String?
While the procedure will not return values, so end of the first line of procedure will not have the return type.
Am I correct?
- means this function returns the result value in String?
While the procedure will not return values, so end of the first line of procedure will not have the return type.
Am I correct?
Like I said, functions return results, so for example:
function AbbreviateName(First, Last: String): String;
returns a string, and can be used like so:
var
s: String;
begin
s:=AbbreviateName('Foo', 'Bar');
ShowMessage(s);
end;
And procedures are functions that do not return any results.
procedure AbbreviateName(First, Last: String);
begin
ShowMessage(First+','+Last );
// No result returned
end;
used like:
begin
AbbreviateName('Foo', 'Bar');
end;
------------------
Regards,
Russell
function AbbreviateName(First, Last: String): String;
returns a string, and can be used like so:
var
s: String;
begin
s:=AbbreviateName('Foo', 'Bar');
ShowMessage(s);
end;
And procedures are functions that do not return any results.
procedure AbbreviateName(First, Last: String);
begin
ShowMessage(First+','+Last
// No result returned
end;
used like:
begin
AbbreviateName('Foo', 'Bar');
end;
------------------
Regards,
Russell
cybermilky,
I believe Russell had already pinpointed by mistake. I had blocked and copied my function, pasted, and reedited it for the procedure, and didn't remove the string from the end, hense the OOPS post thereafter.
Shane
I believe Russell had already pinpointed by mistake. I had blocked and copied my function, pasted, and reedited it for the procedure, and didn't remove the string from the end, hense the OOPS post thereafter.
Shane
//As Russell stated, a function returns a result
function AbbreviateName(First, Last: String): String;
begin
result:= First[1] + Last[1];
end;
var
Abr: String;
Abr:= AbbreviateName('SHane', 'Holmes');
Abr = 'SH'
// and A Procedure does not return a result
procedure AbbreviateName(const First, Last: String): String;
var
begin
ShowMesage(First[1] + Last[1]);
end;
Shane