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delete_expression

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balazs	delete_expression	Lead	[-]
Posts: 7 (2009-01-07 10:16:52) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Report Post	Hi, I have a strange problem with delete_expression. Here a little program: void _main(void) { float a = 12.2; ESI argptr = top_estack; push_Float(a); delete_expression(argptr); } and the calculator answers me "internal error". What kind of error message ist this? What can I do? Thanks for a short answer, balazs
pinh3ad		#1	[-]
Posts: 48 (2009-01-07 10:25:17) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Report Post	I'm not sure what your exact goal here is, but your code looks somewhat strange to me. With delete_expression you probably want to remove the float a from the stack, right? If so, here's how to do it: void _main(void) { float a = 12.2; push_Float(a); delete_expression(top_estack); } Messing with the expression stack can be quite dangerous, so make sure you understand the underlying concepts.
balazs		#2	[-]
Posts: 8 (2009-01-07 11:02:05) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Report Post	Thanks, the goal was, I wrote a C-program to see and edit TI-Basic Variables at the screen. It works as intended, but I can't delete one of this. The program I sent is an experiment to see how delete_expression works, and, I suspect, I don't understand the difference betwen a C Variable and a TI-Basic Variable, right? ( How can I delete a TI-Basic Variable in C?)
Lionel Debroux		#3	[-]
Posts: 2987 (2009-01-07 11:34:20) Former Admin Reply Quote More My Recent Posts Message Me Connection Blocking Invite Report Post	In order to delete a variable, you want to use SymDel.
balazs	SymDel	#4	[-]
Posts: 9 (2009-01-07 11:51:12) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Report Post	Thanks, it seems, it was!!

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