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Runtime evaluation/In an environment: Difference between revisions
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=={{header|REXX}}==
<lang rexx>/*REXX program
▲b=fact(4)
say b-a
exit /*stick a fork in it, we're all done. */
/*──────────────────────────────────────────────────────────────────────────────────────*/
fact: procedure; parse arg n; != 1; do j=2 to n; != ! * j; end; return !</lang>▼
{{out|output|text= }}
▲fact: procedure; parse arg n; !=1; do j=2 to n; !=!*j; end; return !</lang>
<pre>
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