How do I store MAC address in a variable?

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i want to store the mac address in a variable retrieved from the code in the for loop mentioned below

What I have tried:

int a;
	char MacAddr[6];
	ULONG size = sizeof(MacAddr);
	char jk;
	SendARP(inet_addr(argv[1]), inet_addr(ipv4.c_str()), MacAddr, &size);
	//std::cout << "Ipv4 is:  "+ipv4;
	std::cout << "\nThe MAC address is: ";
	for (unsigned char c : MacAddr)
		std::cout << std::setw(2) << std::setprecision(2) << std::setfill('0') << std::hex << (unsigned)c << " ";

Posted 2-Feb-20 23:06pm

Member 12899279

Updated 3-Feb-20 20:09pm

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phil.o 3-Feb-20 5:19am

Unclear: storing anything in a variable is trivial (variable = value;). The MacAddr variable already holds the value.
Please use the green Improve question widget which appears on hovering your question, and clarify it.

Member 12899279 3-Feb-20 5:43am

as you can see i am displaying mac address after converting it in hex and i want to use the same format in which its being displayed through for loop mechanism i want to store it in string variable so next time i can simply print string variable on the screen

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CPallini · Accepted Answer · 2020-02-02T23:59:00

Quote:
as you can see i am displaying mac address after converting it in hex and i want to use the same format in which its being displayed through for loop mechanism i want to store it in string variable so next time i can simply print string variable on the screen

Then use a std::ostringsteam, instead of std::cout.
Have a look at ostringstream::ostringstream - C++ Reference[^] (see the code sample).

Member 12899279 · Accepted Answer · 2020-02-03T20:09:00

Solution 3

got it working with this

std::stringstream ss;
for (unsigned char c : MacAddr)
		ss<<std::setw(2) << std::setprecision(2) << std::setfill('0') << std::hex << (unsigned)c << " ";
	std::string sMAC = ss.str();
	cout << "\nMac address is:  " + sMAC;

Posted 3-Feb-20 20:09pm