Code :
REPORT ZVP_DEMO.

DATA: S1 TYPE CHAR50,
      S2 TYPE CHAR50,
      S3 TYPE CHAR50.

S1 = 'HELLO'.
S2 = 'WORLD'.
CONCATENATE S1 S2 INTO S3 SEPARATED BY SPACE.

WRITE: S3.


Output :
HELLO WORLD

IDE Used To Test This Code : SAP Login 730.

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