The return value of the following integer definition function is an integer, and the integer in parentheses defines the two parameters i and j of the function as integers.

For example, the following function finds the sum of two numbers

function TForm1.MyFun(i, j: integer): integer;

begin

< p> result:= i+j; //The return value is the sum of the two parameters

end;

We can call it in the click event of the button

< p>procedure TForm1.Button1Click(Sender: TObject);

var

i: integer;

begin

i:= MyFun (3, 5); //Call the function to find the sum of 3 and 5, and assign the result to the integer variable i

showmessage('The sum of the two numbers is: '+ inttostr(i)); //Output The result of function calculation

end;