Quote:
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Originally Posted by mightywombat
as an addition to my last post, what does the keyword static mean as well? as in:
static unsigned int divisor =0;
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volitile tells the compiler not to assume the memory location of the variable retains it's value. It will check that the variable has the correct value whenever your code uses it.
static tells the compiler to always retain the variable's value.
You'll want to use
static quite often.
In the following example, divisor will increase in value every time My_stuff() is called, but x will always start fresh as 0 each time and increase to 1, before being lost when you exit the routine:
Code:
void My_stuff()
{
static unsigned int divisor =0;
unsigned int x=0;
x++;
divisor++;
}