The context in which this discussion takes place is “Return Values: The function returns the resulting incremented value” and “Since Windows 98 was a uniprocess

The context in which this discussion takes place is “Return Values: The function returns the resulting incremented value” and “Since Windows 98 was a uniprocessor operating system, it didn’t have to worry about a second processor changing the memory at the same time”. The concern with a shared integer in this context is that you get interrupted between INC and MOV.