False
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False is a boolean value indicating that something is not true.
false is usually a keyword for a boolean value, a value that can be either true or false. Often these values are represented by integers or just one bit, with zero indicating false and one indicating true. A good mnemonic device to remember this is that in C we always return zero for zero errors, or "false: there were no errors encountered here."
In more optimized environments, the other 31 bits of a 32-bit integer are removed for a special boolean data type which is only 1 bit long (2 if you include the parity bit, however that applies mainly to system RAM and not the execution cache).
