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Message: [QUOTE="glen herrmannsfeldt, post: 1701156"] (snip regarding when to use unsigned integers) Despite what I am about to say, I agree 100% with these statements. (With the possible exception of modulo arithmetic not modulo a power of two.) Well, yes. Except that there are cases where size_t values might be between INT_MAX and UINT_MAX, which could cause problems. (Assuming that the implementation does it right for those values.) argc > INT_MAX should be pretty rare. (snip) Well, for multiply and divide they are different, and it isn't so easy to do unsigned divide using a signed divide operation. There are still machines around without unsigned multiply and divide. -- glen [/QUOTE]