Emptying Values

[GreenCherry]

how do you make an integer worth nothing? Would you use empty[x]? I haven't tried that yet. And I am assuming you empty an apstring by doing:
x = "";
Quick answers would be appreciated.

[Eibro]

Make it equal to 0?

int i = 200;

// ...

i = 0;

[Sang-drax]

This empties the interger t, with error checking to make sure it really is emptied.
Only works on x86 compatible processors though.

    int t;
    __asm
    {
     mov cx, 0x003f
     cpuflag:
       mov t,0
       cmp t,0
       je exception
     loop cpuflag
     exception:
    }

[DougDbug]

As long as a variable "exists" and as long as it is in scope, it has to have some value. It can contain zero, but I wouldn't call a numerical variable "empty". Variables "point to" physical memory (probably a bad choice of words because we're not talking about pointers.) That physical memory has some binary number in it... maybe zero!

C++ finds the end of a string by looking for the first NULL (zero). So a string that starts with NULL (often expressed as '\0') will be treated as "empty" and will have a length of zero.