Question

Дана строка программы ,которая определяет четное число или нет. Исправьте ошибки if i mod 3=0 then writeln ('число нечетное') else writeln ('число четное')

Answer 1

if i mod 2 = 0 then writeln ('число четное') else writeln ('число нечетное')

Answer 2

To correct the errors in the given program that is intended to determine whether a number is even or odd, we need to change the syntax for calculating the remainder (modulus operation) in many programming languages, including Pascal, which uses the mod keyword. Also, the logic of the if statement needs to be corrected to check if the number is even. Here's the corrected version of the program:

pascalCopy code
program CheckEvenOrOdd;

var
  i: Integer;

begin
  writeln('Введите число: ');
  readln(i);

  if i mod 2 = 0 then
    writeln('Число четное')
  else
    writeln('Число нечетное');
end.

In the corrected version, we use i mod 2 to check if the number is even. If the remainder of i divided by 2 is 0, then it's even; otherwise, it's odd.