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exit() function

Created by: Mike J at: 4/21/2009 11:57 AM (4 Replies)

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4/21/2009 11:57 AM	Rate (0)
Mike J Platinum Member Joined: 10/9/2007 Last visit: 12/4/2023 Posts: 1233 Rating: (115)	Hi All Does anybody know how "exit()" function in WinCC works? In the following code: printf("before\n"); exit(0); printf("after!\n"); Shouldn't the function stop when reaches exit(), so the printf("after"\n) command is never executed? Well, everything is executed!!! Mike J
	Energy Automation products: Sicam, Siprotec, Digsi
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4/30/2009 10:42 AM	Rate (0)
cumulus Platinum Member Joined: 9/27/2007 Last visit: 12/18/2020 Posts: 993 Rating: (102)	Hi Use return instead of exit. Both has the same function. regards cumulus
	Learn more about visualization - visit the HMI courses of Siemens AG! siemens.com/sitrain Basic course WinCC (TIA Portal) machine-based https://support.industry.siemens.com/cs/ww/en/view/109758624 Advanced course WinCC (TIA Portal) machine-based https://support.industry.siemens.com/cs/ww/en/view/109758626 Basic course WinCC Professional https://support.industry.siemens.com/cs/ww/en/view/109758618 Basic course SiVArc (Auto. Generation of HMIs) https://support.industry.siemens.com/cs/ww/en/view/109758628 Basic course Energy Suite https://support.industry.siemens.com/cs/ww/en/view/109755577
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4/30/2009 10:58 AM	Rate (0)
Mike J Platinum Member Joined: 10/9/2007 Last visit: 12/4/2023 Posts: 1233 Rating: (115)	Hi Cumulus Just correcting my last post. "return" cannot be used for Project functions, but inGlobal action. I talked with the support and they told me the exit() function is not implemented in WinCC, so I'm now using simple "if, else if" statements. "return" without value does not work - compiler in WinCC 6.0 says it must return a value. But for my case I can use "return (0)". Thanks you all for the help. Mike J
	Last edited by: Mike J at: 4/30/2009 2:08 PM Energy Automation products: Sicam, Siprotec, Digsi
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4/30/2009 11:58 AM	Rate (0)
kukukk Posts: 133 Rating: (5)	And if you use return without a parameter? printf("before\n"); return; printf("after!\n");
kukukk Posts: 133 Rating: (5)
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4/30/2009 12:08 PM	Rate (0)
jaromir Bronze Member Joined: 3/6/2008 Last visit: 2/5/2021 Posts: 139 Rating: (18)	You can use "return" without return value. It is work Jaromir
	Jaromir Hladik DEL a.s. Strojirenska 38 591 01 Zdar nad Sazavou http:\\www.del.cz
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