22 lines
410 B
QBasic
22 lines
410 B
QBasic
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1 SIZE% = 8190
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2 DIM FLAGS%(8191)
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3 PRINT "10 iterations"
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4 FOR X% = 1 TO 10
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5 COUNT% = 0
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6 FOR I% = 0 TO SIZE%
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7 FLAGS%(I%) = 1
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8 NEXT I%
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9 FOR I% = 0 TO SIZE%
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10 IF FLAGS%(I%) = 0 THEN 18
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11 PRIME% = I% + I% + 3
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12 K% = I% + PRIME%
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13 IF K% > SIZE% THEN 17
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14 FLAGS%(K%) = 0
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15 K% = K% + PRIME%
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16 GOTO 13
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17 COUNT% = COUNT% + 1
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18 NEXT I%
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19 NEXT X%
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20 PRINT COUNT%," PRIMES"
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21 SYSTEM
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