How can I fix the error C4996?

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Hi, I've created new project in visual studio 2019 and import code resource from the original file. But when compiled it came with this error:

C4996: 'getch':the POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _getch
Here is the program at the place the error was showed:

int	c;

	dltXY = XY_DLT; dltAB = AB_DLT;

	flag_move = 0;
	c = getch();
	c = toupper(c);
	if (c == 'Q')
		return 1;

What I have tried:

I've tried to fix the other problem that is about

struct sockaddr_in sa
function but I don't understand this error so I'm stuck with it.

Posted 20-Oct-19 23:10pm

Member 14629414

Updated 20-Oct-19 23:22pm

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KarstenK 21-Oct-19 7:10am

Understand such error messages as advice from some fellow programmer which hinted you to some bug. Maybe he isnt to good in explaining it all. :-)

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Richard MacCutchan · Answer 1 · 2019-10-20T23:22:00

Solution 1

Do what the error message tells you and change the function call to _getch(). Converting VC++ 6.0 code may find a number of incompatible functions; you just have to change them to conform to the latest standards.

See Compiler Warning (level 3) C4996 | Microsoft Docs[^] for an explanation. Note that it is not recommended to disable this warning message.

Posted 20-Oct-19 23:22pm

Richard MacCutchan

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Member 14629414 21-Oct-19 5:27am

@Richard MacCutchan
Thank you for your reply
I've changed it into _getch()
Then i receive more errors when compiled it

Richard MacCutchan 21-Oct-19 6:23am

Yes, and you need to look at those errors one by one and correct them.