QBASIC PATTERN : 1,10,101,1010,10101

1
10
101
1010
10101

CLS
 FOR I = 1 TO 5
 FOR J = 1 TO I
 PRINT J MOD 2;
 NEXT J
 PRINT
 NEXT I
 END

USING SUB

DECLARE SUB PATTERN()
 CLS
 CALL PATTERN
 END
 
 SUB PATTERN
 FOR I = 1 TO 5
 FOR J = 1 TO I
 PRINT J MOD 2;
 NEXT J
 PRINT
 NEXT I
 END SUB