sizeof

I have a function that relies on the sizeof statement to get the size of a constant array of unsigned bytes. Everytime I use the function the sizeof statement returns 4 regardless of the size of my array.

Here's the code that doesn't seem to work. The array argument is defined as a const u8 array[].

u8  c;
   
for(c = 0;c <= sizeof(array);++c){
    //do something here
}

>>8
Reasons for avoidance in practice
Most modern compilers can optimize away the temporary variable in the naive swap, in which case the naive swap uses the same amount of memory and the same number of registers as the XOR swap and is at least as fast, and often faster.[2] As a general rule, you should never use the XOR swap unless you know for a fact that the naive swap will not suit your application (which is very rare in this day and age). The XOR swap is also much less readable, and can be completely opaque to anyone who isn't already familiar with the technique.¹
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References:
http://en.wikipedia.org/wiki/XOR_swap_algorithm Retrieved on Monday, 27 April 2009.