Data commit

Task/Anonymous-recursion/IS-BASIC/anonymous-recursion.basic

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+100 PROGRAM "Fibonacc.bas"
+110 FOR I=0 TO 10
+120   PRINT FIB(I);
+130 NEXT
+140 DEF FIB(K)
+150   SELECT CASE K
+160   CASE IS<0
+170     PRINT "Negative parameter to Fibonacci.":STOP
+180   CASE 0
+190     LET FIB=0
+200   CASE 1
+210     LET FIB=1
+220   CASE ELSE
+230     LET FIB=FIB(K-1)+FIB(K-2)
+240   END SELECT
+250 END DEF