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delphifiledelphi-2010

How do I read a row from a file that has both numbers and letters in Delphi 2010?

I have a text file that has, on any given row, data that are expressed both in text format and in numeric format. Something like this:

Dog 5 4 7

How do I write a file reading routine in Delphi that reads this row and assigns the read values into the correct variables ("Dog" into a string variable and "5", "4" and "7" into real or integer variables)?

Solution

  • You can use SplitString from StrUtils to split the string into pieces. And then use StrToInt to convert to integer.

    uses
  StrUtils;
....
var
  Fields: TStringDynArray;
....
Fields := SplitString(Row, ' ');
StrVar := Fields[0];
IntVar1 := StrToInt(Fields[1]);
IntVar2 := StrToInt(Fields[2]);
IntVar3 := StrToInt(Fields[3]);

    And obviously substitute StrToFloat if you have floating point values.