print prime numbers using string

[former_member1029928]

Accept a number and print all the prime numbers up to the number

example:

P_NO 100

2,3,5,7,11,13.......97

[Former Member]

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[Sandra_Rossi]

What could be the algorithm to find out if one number is a PRIME number?

After that, the rest is easy.

[Nitish2027]

Use the below Code:

  DATA: p_num TYPE string VALUE 100.
  TYPES: BEGIN OF ty_int,
           num TYPE int2,
         END OF ty_int.
  DATA: lt_int  TYPE TABLE OF ty_int,
        lt_int1 TYPE TABLE OF ty_int.

  DATA: lv_flag TYPE int2.
  DATA: lv_temp TYPE int2 VALUE 1.
  DATA: text TYPE string VALUE 'Prime Numbers: '.

  lt_int =  VALUE #( FOR i = 2 THEN i + 1 UNTIL i >= p_num
                                 ( num = i )
                        ).

  LOOP AT lt_int INTO DATA(ls_int).

    lv_flag = 0.

    LOOP AT lt_int INTO DATA(ls_int1) WHERE num <= ls_int-num.

      lv_temp = ls_int-num MOD ls_int1-num.

      IF lv_temp = 0.
        lv_flag = lv_flag + 1.
      ENDIF.

    ENDLOOP.

    IF lv_flag = 1.
      text = text && | { ls_int-num }| && |,| .
    ENDIF.

  ENDLOOP.

  WRITE:/ text.

This will give you your desired output:

You can also try to do this with new ABAP syntaxes using REDUCE and FOR operators.

Thanks and Regards,

Nitish Singh.