Testing DEF Type Statement Parsing
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DEFINT i-k parsed successfully
DEFSNG a-c parsed successfully
DEFDBL d-f parsed successfully
DEFSTR s parsed successfully

Explicit % suffix forces integer:
i% = 10.9 becomes10
j% = 20.7 becomes20

String variables with $ suffix:
name$ =MBASIC
version$ =5.21

Case insensitivity test:
Set a=100, then A=200
a now equals 200 (should be 200)

DEF statement parsing test complete!

