Floyd's triangle: Difference between revisions
Add ABC
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</pre>
=={{header|ABC}}==
<syntaxhighlight lang="ABC">HOW TO RETURN width n:
SELECT:
n<10: RETURN 1
ELSE: RETURN 1 + width floor (n/10)
HOW TO DISPLAY A FLOYD TRIANGLE WITH lines LINES:
PUT lines * (lines+1)/2 IN maxno
PUT 1 IN n
FOR line IN {1..lines}:
FOR col IN {1..line}:
WRITE n >> (1 + width (maxno - lines + col))
PUT n+1 IN n
WRITE /
DISPLAY A FLOYD TRIANGLE WITH 5 LINES
WRITE /
DISPLAY A FLOYD TRIANGLE WITH 14 LINES
WRITE /</syntaxhighlight>
{{out}}
<pre> 1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
=={{header|Action!}}==
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