Tom said:



That's what I said, but perhaps not as clearly, and it certainly bears repeating. You can get the strangest results and some real subtle problems if your data ranges beyond your expectations and you get an overflow somewhere in your calculations.

Extra caution is required if you have the need to mix signed and unsigned numbers. You will be better off if you cast a variable yourself, rather than letting the compiler handle integer promotion and sign extending in the sequence it chooses (which might not convert a number the way you would expect).

Dennis