SAP ABAP Program to find the largest number among three given numbers

 Program: 

REPORT ZSM_LARGEST_NUM.

DATA: num1 TYPE i,
      num2 TYPE i,
      num3 TYPE i,
      largest TYPE i.

PARAMETERS: p_num1 TYPE i,
            p_num2 TYPE i,
            p_num3 TYPE i.

START-OF-SELECTION.

  num1 = p_num1.
  num2 = p_num2.
  num3 = p_num3.

  IF num1 >= num2 AND num1 >= num3.
    largest = num1.
  ELSEIF num2 >= num1 AND num2 >= num3.
    largest = num2.
  ELSE.
    largest = num3.
  ENDIF.

  WRITE: / 'The largest number is:', largest.

OUTPUT: