Pascal's triangle: Difference between revisions
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m (→{{header|REXX}}: removed ''height'' from ''style''. -- ~~~~) |
m (→{{header|REXX}}: added comments in the header section about creating a disk file vs. displaying the triangle. -- ~~~~) |
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=={{header|REXX}}== |
=={{header|REXX}}== |
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There is no pratical limit for this version, triangles up to 46 |
There is no pratical limit for this version, triangles up to 46 rows have been generated in a |
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<br>window 620 pixels wide. |
<br>window 620 pixels wide. |
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<br><br>If the number specified is negative, the output is written to a file instead. Triangles up to |
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<br>1000 rows have been created. The file created is named: '''PASCALS.n''' |
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<br>where '''n''' is the absolute value of the number entered. |
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<lang rexx>/*REXX program to display Pascal's triangle, neatly centered/formatted.*/ |
<lang rexx>/*REXX program to display Pascal's triangle, neatly centered/formatted.*/ |
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/*AKA: Yang Hui's ▲, Khayyam-Pascal ▲, Kyayyam ▲, Tartaglia's ▲ */ |
/*AKA: Yang Hui's ▲, Khayyam-Pascal ▲, Kyayyam ▲, Tartaglia's ▲ */ |
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numeric digits |
numeric digits 1000 /*let's be able to handle big ▲. */ |
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arg |
arg nn .; if nn=='' then nn=10; n=abs(nn) |
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a.=1 /*if NN < 0, output is to a file.*/ |
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if n<1 then do; say "***error!*** N can't be non-positive:" n; exit 13;end |
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a.=1 |
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w=length(mx) /* W =width of biggest number. */ |
w=length(mx) /* W =width of biggest number. */ |
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line.=1 |
line.=1 |
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do L=1 for n /*show lines in Pascal's triangle*/ |
do L=1 for n /*show lines in Pascal's triangle*/ |
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say center(line.L,width) |
if nn>0 then say center(line.L,width) /*either SAY or write.*/ |
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else call lineout 'PASCALS.'n,center(line.L,width) |
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end /*L*/ |
end /*L*/ |
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exit |
exit |
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