What does this error mean?

Question

I am programming in Pascal but I do not know where is the error. This is the program:

VAR
    iNum1, iNum2, iNum3 : Integer;
    
BEGIN
    Write('Introduce un numero entero: ');
    ReadLn(iNum1);
    Write('Introduce otro entero: ');
    ReadLn(iNum2);
    Write('Introduce otro entero: ');
    ReadLn(iNum3);
    
    IF (iNum1 > iNum2) AND (iNum1 > iNum3) THEN
        BEGIN
        Write('El valor mayor es: ', iNum1);
        ReadLn;
        END
    
    ELSE IF (iNum1 < iNum2) AND (iNum2 > iNum3) THEN
        BEGIN
        Write('El valor mayor es: ', iNum2);
        ReadLn;
        END
    
    ELSE IF (iNum1 > iNum2) AND (iNum2 < iNum3) THEN
        BEGIN
        Write('El valor mayor es: ', iNum3);
        ReadLn;
        END;
END.

And the error says:

main.pas(1,9) Fatal: Syntax error, "identifier" expected but "ordinal const" found

Can someone help me please?

Answer 1

The error means that the compiler was looking for a name (and identifier), but instead, it found a number (ordinal const).

As for your code, if I copy the code you provided, it compiles and runs.

Your logic, however, does not work correctly for all scenarios.

For instance, for the input [1, 2, 3] your program does not find the largest number (3).

Review the last if statement to fix the problem.

Good luck!