TalkPHP - View Single Post - The most inventive way to switch 2 values

Village Idiot · 04-08-2009, 09:47 PM

I haven't done any in a while. This certainly is not inventive, just lower level that need be.
C++

Code:

    int a = 0;
    int b = 1;
    int temp;

    int *addrA = &a;
    int *addrB = &b;
    temp = *addrA;
    a = *addrB;
    b = temp;

What this code does:
Assign 2 ints with the value of zero and one respectively
Assign two pointers to the memory address of each
Manually go into memory and get the values opposed to letting C++ do it.

04-08-2009, 09:47 PM	#26 (permalink)
Village Idiot Wizard Join Date: Sep 2007 Posts: 1,299 Thanks: 17	I haven't done any in a while. This certainly is not inventive, just lower level that need be. C++ Code: int a = 0; int b = 1; int temp; int addrA = &a; int addrB = &b; temp = addrA; a = addrB; b = temp; What this code does: Assign 2 ints with the value of zero and one respectively Assign two pointers to the memory address of each Manually go into memory and get the values opposed to letting C++ do it. __________________