Qbasic program to find / print whether a number is prime or composite
CLS
INPUT "ENTER ANY NUMBER"; N
C = 0
FOR I = 1 TO N
IF N MOD I = 0 THEN C = C + 1
NEXT I
IF C = 2 THEN
PRINT N; "IS PRIME NUMBER"
ELSE
PRINT N; "IS COMPOSITE NUMBER"
END IF
END
USING SUB
DECLARE SUB PRIME(N)
CLS
INPUT "ENTER ANY NUMBER"; N
CALL PRIME(N)
END
SUB PRIME(N)
C = 0
FOR I = 1 TO N
IF N MOD I = 0 THEN C = C + 1
NEXT I
IF C = 2 THEN
PRINT N; "IS PRIME NUMBER"
ELSE
PRINT N; "IS COMPOSITE NUMBER"
END IF
END SUB
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